diff --git a/src/components/material/StockStatus/StockStatusDetail.tsx b/src/components/material/StockStatus/StockStatusDetail.tsx
index 0c7399b3..1a63cdf1 100644
--- a/src/components/material/StockStatus/StockStatusDetail.tsx
+++ b/src/components/material/StockStatus/StockStatusDetail.tsx
@@ -69,6 +69,7 @@ interface StockDetailData {
   unit: string;
   calculatedQty: number;
   safetyStock: number;
+  maxStock: number;
   wipStatus: 'active' | 'inactive';
   useStatus: 'active' | 'inactive';
 }
@@ -86,9 +87,11 @@ export function StockStatusDetail({ id }: StockStatusDetailProps) {
   // 폼 데이터 (수정 모드용) - wipStatus는 읽기 전용이므로 제외
   const [formData, setFormData] = useState<{
     safetyStock: number;
+    maxStock: number;
     useStatus: 'active' | 'inactive';
   }>({
     safetyStock: 0,
+    maxStock: 0,
     useStatus: 'active',
   });
 
@@ -122,12 +125,14 @@ export function StockStatusDetail({ id }: StockStatusDetailProps) {
           unit: data.unit,
           calculatedQty: data.currentStock, // 재고량
           safetyStock: data.safetyStock,
+          maxStock: data.maxStock || 0,
           wipStatus: 'active', // 재공품 상태 (기본값: 사용)
           useStatus: data.status === null ? 'active' : 'active', // 기본값
         };
         setDetail(detailData);
         setFormData({
           safetyStock: detailData.safetyStock,
+          maxStock: detailData.maxStock,
           useStatus: detailData.useStatus,
         });
       } else {
@@ -169,10 +174,24 @@ export function StockStatusDetail({ id }: StockStatusDetailProps) {
     }));
   };
 
+  // 저장 시 검증
+  const validateForm = (): string | null => {
+    if (formData.maxStock > 0 && formData.safetyStock > formData.maxStock) {
+      return '최대재고는 안전재고 이상이어야 합니다.';
+    }
+    return null;
+  };
+
   // 저장 핸들러
   const handleSave = async () => {
     if (!detail) return;
 
+    const validationError = validateForm();
+    if (validationError) {
+      toast.error(validationError);
+      return;
+    }
+
     setIsSaving(true);
     try {
       const result = await updateStock(id, formData);
@@ -186,6 +205,7 @@ export function StockStatusDetail({ id }: StockStatusDetailProps) {
             ? {
                 ...prev,
                 safetyStock: formData.safetyStock,
+                maxStock: formData.maxStock,
                 useStatus: formData.useStatus,
               }
             : null
@@ -331,16 +351,17 @@ export function StockStatusDetail({ id }: StockStatusDetailProps) {
                 {renderReadOnlyField('품목명', detail.itemName)}
               </div>
 
-              {/* Row 2: 규격, 단위, 재고량, 안전재고 */}
+              {/* Row 2: 규격, 단위, 재고량, 안전재고(최소) */}
               <div className="grid grid-cols-1 md:grid-cols-4 gap-4">
                 {renderReadOnlyField('규격', detail.specification)}
                 {renderReadOnlyField('단위', detail.unit)}
                 {renderReadOnlyField('재고량', detail.calculatedQty)}
-                {renderReadOnlyField('안전재고', detail.safetyStock)}
+                {renderReadOnlyField('안전재고 (최소)', detail.safetyStock)}
               </div>
 
-              {/* Row 3: 재공품, 상태 */}
+              {/* Row 3: 최대재고, 재공품, 상태 */}
               <div className="grid grid-cols-1 md:grid-cols-4 gap-4">
+                {renderReadOnlyField('최대재고', detail.maxStock > 0 ? detail.maxStock : '-')}
                 {renderReadOnlyField('재공품', USE_STATUS_LABELS[detail.wipStatus])}
                 {renderReadOnlyField('상태', USE_STATUS_LABELS[detail.useStatus])}
               </div>
@@ -382,7 +403,7 @@ export function StockStatusDetail({ id }: StockStatusDetailProps) {
                 {/* 안전재고 (수정 가능) */}
                 <div>
                   <Label htmlFor="safetyStock" className="text-sm text-muted-foreground">
-                    안전재고
+                    안전재고 (최소)
                   </Label>
                   <Input
                     id="safetyStock"
@@ -395,8 +416,23 @@ export function StockStatusDetail({ id }: StockStatusDetailProps) {
                 </div>
               </div>
 
-              {/* Row 3: 재공품 (읽기 전용), 상태 (수정 가능) */}
+              {/* Row 3: 최대재고 (수정 가능), 재공품 (읽기 전용), 상태 (수정 가능) */}
               <div className="grid grid-cols-1 md:grid-cols-4 gap-4">
+                {/* 최대재고 (수정 가능) */}
+                <div>
+                  <Label htmlFor="maxStock" className="text-sm text-muted-foreground">
+                    최대재고
+                  </Label>
+                  <Input
+                    id="maxStock"
+                    type="number"
+                    value={formData.maxStock}
+                    onChange={(e) => handleInputChange('maxStock', e.target.value)}
+                    className="mt-1.5 border-gray-300 focus:border-blue-500 focus:ring-blue-500"
+                    min={0}
+                    placeholder="0 = 미설정"
+                  />
+                </div>
                 {/* 재공품 (읽기 전용) */}
                 {renderReadOnlyField('재공품', USE_STATUS_LABELS[detail.wipStatus], true)}
                 {/* 상태 (수정 가능) */}
diff --git a/src/components/material/StockStatus/StockStatusList.tsx b/src/components/material/StockStatus/StockStatusList.tsx
index 8974a7ad..93f66d05 100644
--- a/src/components/material/StockStatus/StockStatusList.tsx
+++ b/src/components/material/StockStatus/StockStatusList.tsx
@@ -66,6 +66,9 @@ export function StockStatusList() {
     useStatus: 'all',
   });
 
+  // ===== 통계 카드 필터 상태 =====
+  const [stockStatusFilter, setStockStatusFilter] = useState<'all' | 'low' | 'out'>('all');
+
   // 데이터 로드 함수
   const loadData = useCallback(async () => {
     try {
@@ -120,6 +123,13 @@ export function StockStatusList() {
       if (stock.useStatus !== useStatusFilter) return false;
     }
 
+    // 통계 카드 재고상태 필터
+    if (stockStatusFilter === 'low') {
+      if (stock.status !== 'low') return false;
+    } else if (stockStatusFilter === 'out') {
+      if (stock.status !== 'out') return false;
+    }
+
     return true;
   });
 
@@ -137,6 +147,7 @@ export function StockStatusList() {
     { header: '단위', key: 'unit' },
     { header: '재고량', key: 'calculatedQty' },
     { header: '안전재고', key: 'safetyStock' },
+    { header: '최대재고', key: 'maxStock' },
     { header: '재공품', key: 'wipQty' },
     { header: '상태', key: 'useStatus', transform: (value) => USE_STATUS_LABELS[value as 'active' | 'inactive'] || '-' },
   ];
@@ -189,6 +200,8 @@ export function StockStatusList() {
       value: `${stockStats?.totalItems || 0}`,
       icon: Package,
       iconColor: 'text-gray-600',
+      onClick: () => setStockStatusFilter('all'),
+      isActive: stockStatusFilter === 'all',
     },
     {
       label: '정상 재고',
@@ -201,12 +214,18 @@ export function StockStatusList() {
       value: `${stockStats?.lowCount || 0}`,
       icon: AlertCircle,
       iconColor: 'text-red-600',
+      onClick: () => setStockStatusFilter(stockStatusFilter === 'low' ? 'all' : 'low'),
+      isActive: stockStatusFilter === 'low',
+      tooltip: '현재 재고량이 안전재고(최소) 미만인 품목입니다.\n발주를 검토하여 재고를 보충해야 합니다.\n클릭하면 해당 품목만 필터링됩니다.',
     },
     {
       label: '안전재고 미달',
       value: `${stockStats?.outCount || 0}`,
       icon: AlertTriangle,
       iconColor: 'text-orange-600',
+      onClick: () => setStockStatusFilter(stockStatusFilter === 'out' ? 'all' : 'out'),
+      isActive: stockStatusFilter === 'out',
+      tooltip: '재고가 0인 품목입니다.\n긴급 발주가 필요할 수 있습니다.\n클릭하면 해당 품목만 필터링됩니다.',
     },
   ];
 
@@ -247,13 +266,14 @@ export function StockStatusList() {
   // ===== 테이블 컬럼 =====
   const tableColumns = useMemo(() => [
     { key: 'no', label: 'No.', className: 'w-[60px] text-center' },
-    { key: 'itemCode', label: '품목코드', className: 'min-w-[100px]', copyable: true },
+    { key: 'itemCode', label: '품목코드', className: 'w-[80px]', copyable: true },
     { key: 'itemType', label: '품목유형', className: 'w-[80px]' },
     { key: 'itemName', label: '품목명', className: 'min-w-[150px]', copyable: true },
     { key: 'specification', label: '규격', className: 'w-[100px]', copyable: true },
     { key: 'unit', label: '단위', className: 'w-[60px] text-center', copyable: true },
     { key: 'calculatedQty', label: '재고량', className: 'w-[80px] text-center', copyable: true },
     { key: 'safetyStock', label: '안전재고', className: 'w-[80px] text-center', copyable: true },
+    { key: 'maxStock', label: '최대재고', className: 'w-[80px] text-center', copyable: true },
     { key: 'wipQty', label: '재공품', className: 'w-[80px] text-center', copyable: true },
     { key: 'useStatus', label: '상태', className: 'w-[80px] text-center' },
   ], []);
@@ -285,6 +305,7 @@ export function StockStatusList() {
         <TableCell className="text-center">{item.unit}</TableCell>
         <TableCell className="text-center">{item.calculatedQty}</TableCell>
         <TableCell className="text-center">{item.safetyStock}</TableCell>
+        <TableCell className="text-center">{item.maxStock}</TableCell>
         <TableCell className="text-center">{item.wipQty}</TableCell>
         <TableCell className="text-center">
           <span className={item.useStatus === 'inactive' ? 'text-gray-400' : ''}>
@@ -331,6 +352,7 @@ export function StockStatusList() {
             <InfoField label="단위" value={item.unit} />
             <InfoField label="재고량" value={`${item.calculatedQty}`} />
             <InfoField label="안전재고" value={`${item.safetyStock}`} />
+            <InfoField label="최대재고" value={`${item.maxStock}`} />
             <InfoField label="재공품" value={`${item.wipQty}`} />
           </div>
         }
diff --git a/src/components/material/StockStatus/actions.ts b/src/components/material/StockStatus/actions.ts
index 0afb7134..1a411750 100644
--- a/src/components/material/StockStatus/actions.ts
+++ b/src/components/material/StockStatus/actions.ts
@@ -137,6 +137,7 @@ function transformApiToListItem(data: ItemApiData): StockItem {
     actualQty: hasStock ? (parseFloat(String(stock.stock_qty)) || 0) : 0,
     stockQty: hasStock ? (parseFloat(String(stock.stock_qty)) || 0) : 0,
     safetyStock: hasStock ? (parseFloat(String(stock.safety_stock)) || 0) : 0,
+    maxStock: hasStock ? (parseFloat(String(stock.max_stock)) || 0) : 0,
     wipQty: hasStock ? (parseFloat(String((stock as unknown as Record<string, unknown>).wip_qty)) || 0) : 0,
     lotCount: hasStock ? (stock.lot_count || 0) : 0,
     lotDaysElapsed: hasStock ? (stock.days_elapsed || 0) : 0,
@@ -198,6 +199,7 @@ function transformApiToDetail(data: ItemApiData): StockDetail {
     unit: data.unit || 'EA',
     currentStock: hasStock ? (parseFloat(String(stock.stock_qty)) || 0) : 0,
     safetyStock: hasStock ? (parseFloat(String(stock.safety_stock)) || 0) : 0,
+    maxStock: hasStock ? (parseFloat(String(stock.max_stock)) || 0) : 0,
     location: hasStock ? (stock.location || '-') : '-',
     lotCount: hasStock ? (stock.lot_count || 0) : 0,
     lastReceiptDate: hasStock ? (stock.last_receipt_date || '-') : '-',
@@ -280,12 +282,16 @@ export async function getStockById(id: string): Promise<{ success: boolean; data
 
 // ===== 재고 단건 수정 =====
 export async function updateStock(
-  id: string, data: { safetyStock: number; useStatus: 'active' | 'inactive' }
+  id: string, data: { safetyStock: number; maxStock: number; useStatus: 'active' | 'inactive' }
 ): Promise<{ success: boolean; error?: string; __authError?: boolean }> {
   const result = await executeServerAction({
     url: buildApiUrl(`/api/v1/stocks/${id}`),
     method: 'PUT',
-    body: { safety_stock: data.safetyStock, is_active: data.useStatus === 'active' },
+    body: {
+      safety_stock: data.safetyStock,
+      max_stock: data.maxStock,
+      is_active: data.useStatus === 'active',
+    },
     errorMessage: '재고 수정에 실패했습니다.',
   });
   if (result.__authError) return { success: false, __authError: true };
diff --git a/src/components/material/StockStatus/types.ts b/src/components/material/StockStatus/types.ts
index 930340de..0e35a0b5 100644
--- a/src/components/material/StockStatus/types.ts
+++ b/src/components/material/StockStatus/types.ts
@@ -33,13 +33,14 @@ export const ITEM_TYPE_STYLES: Partial<Record<ItemType, string>> = {
 };
 
 // 재고 상태
-export type StockStatusType = 'normal' | 'low' | 'out';
+export type StockStatusType = 'normal' | 'low' | 'out' | 'over';
 
 // 재고 상태 라벨
 export const STOCK_STATUS_LABELS: Record<StockStatusType, string> = {
   normal: '정상',
   low: '부족',
   out: '없음',
+  over: '초과',
 };
 
 // LOT 상태
@@ -63,6 +64,7 @@ export interface StockItem {
   actualQty: number;          // 실제 재고량 (Stock.actual_qty)
   stockQty: number;           // Stock.stock_qty (없으면 0)
   safetyStock: number;        // Stock.safety_stock (없으면 0)
+  maxStock: number;           // Stock.max_stock (없으면 0, 적정재고 상한)
   wipQty: number;             // 재공품 수량 (Stock.wip_qty, 없으면 0)
   lotCount: number;           // Stock.lot_count (없으면 0)
   lotDaysElapsed: number;     // Stock.days_elapsed (없으면 0)
@@ -107,6 +109,7 @@ export interface StockDetail {
   // 재고 현황 (Stock - 없으면 기본값)
   currentStock: number;       // Stock.stock_qty
   safetyStock: number;        // Stock.safety_stock
+  maxStock: number;           // Stock.max_stock (적정재고 상한)
   location: string;           // Stock.location
   lotCount: number;           // Stock.lot_count
   lastReceiptDate: string;    // Stock.last_receipt_date
diff --git a/src/components/organisms/StatCards.tsx b/src/components/organisms/StatCards.tsx
index 2e8f7c58..8eede657 100644
--- a/src/components/organisms/StatCards.tsx
+++ b/src/components/organisms/StatCards.tsx
@@ -1,6 +1,7 @@
 "use client";
 
 import { Card, CardContent } from "@/components/ui/card";
+import { Tooltip, TooltipContent, TooltipProvider, TooltipTrigger } from "@/components/ui/tooltip";
 import { LucideIcon } from "lucide-react";
 
 interface StatCardData {
@@ -15,6 +16,7 @@ interface StatCardData {
   };
   onClick?: () => void;
   isActive?: boolean;
+  tooltip?: string;
 }
 
 interface StatCardsProps {
@@ -31,51 +33,65 @@ export function StatCards({ stats }: StatCardsProps) {
         : 'grid grid-cols-2 sm:grid-cols-3 md:grid-cols-4 gap-2';
 
   return (
-    <div className={gridClass}>
-      {stats.map((stat, index) => {
-        const Icon = stat.icon;
-        const isClickable = !!stat.onClick;
+    <TooltipProvider delayDuration={300}>
+      <div className={gridClass}>
+        {stats.map((stat, index) => {
+          const Icon = stat.icon;
+          const isClickable = !!stat.onClick;
 
-        return (
-          <Card
-            key={index}
-            className={`flex-1 min-w-0 transition-colors ${
-              isClickable ? 'cursor-pointer hover:border-primary/50' : ''
-            } ${
-              stat.isActive ? 'border-primary bg-primary/5' : ''
-            } ${
-              count % 2 === 1 && index === count - 1 && count < 6 ? 'col-span-2 sm:col-span-1' : ''
-            }`}
-            onClick={stat.onClick}
-          >
-            <CardContent className="p-2 md:p-3">
-              <div className="flex items-center justify-between">
-                <div className="flex-1 min-w-0">
-                  <p className="text-[10px] md:text-xs text-muted-foreground mb-0.5 uppercase tracking-wide truncate">
-                    {stat.label}
-                    {stat.sublabel && (
-                      <span className="ml-2 normal-case tracking-normal">{stat.sublabel}</span>
-                    )}
-                  </p>
-                  <p className="font-bold text-base md:text-lg truncate">
-                    {stat.value}
-                  </p>
-                  {stat.trend && (
-                    <p className={`text-[9px] md:text-[10px] mt-0.5 font-medium ${stat.trend.isPositive ? 'text-green-600' : 'text-red-600'}`}>
-                      {stat.trend.value}
+          const card = (
+            <Card
+              className={`flex-1 min-w-0 transition-colors ${
+                isClickable ? 'cursor-pointer hover:border-primary/50' : ''
+              } ${
+                stat.isActive ? 'border-primary bg-primary/5' : ''
+              } ${
+                count % 2 === 1 && index === count - 1 && count < 6 ? 'col-span-2 sm:col-span-1' : ''
+              }`}
+              onClick={stat.onClick}
+            >
+              <CardContent className="p-2 md:p-3">
+                <div className="flex items-center justify-between">
+                  <div className="flex-1 min-w-0">
+                    <p className="text-[10px] md:text-xs text-muted-foreground mb-0.5 uppercase tracking-wide truncate">
+                      {stat.label}
+                      {stat.sublabel && (
+                        <span className="ml-2 normal-case tracking-normal">{stat.sublabel}</span>
+                      )}
                     </p>
+                    <p className="font-bold text-base md:text-lg truncate">
+                      {stat.value}
+                    </p>
+                    {stat.trend && (
+                      <p className={`text-[9px] md:text-[10px] mt-0.5 font-medium ${stat.trend.isPositive ? 'text-green-600' : 'text-red-600'}`}>
+                        {stat.trend.value}
+                      </p>
+                    )}
+                  </div>
+                  {Icon && (
+                    <Icon
+                      className={`w-6 h-6 md:w-8 md:h-8 opacity-15 flex-shrink-0 ${stat.iconColor || 'text-blue-600'}`}
+                    />
                   )}
                 </div>
-                {Icon && (
-                  <Icon
-                    className={`w-6 h-6 md:w-8 md:h-8 opacity-15 flex-shrink-0 ${stat.iconColor || 'text-blue-600'}`}
-                  />
-                )}
-              </div>
-            </CardContent>
-          </Card>
-        );
-      })}
-    </div>
+              </CardContent>
+            </Card>
+          );
+
+          if (stat.tooltip) {
+            return (
+              <Tooltip key={index}>
+                <TooltipTrigger asChild>{card}</TooltipTrigger>
+                <TooltipContent side="bottom" className="max-w-[280px] text-sm whitespace-pre-line">
+                  {stat.tooltip}
+                </TooltipContent>
+              </Tooltip>
+            );
+          }
+
+          return <div key={index}>{card}</div>;
+        })}
+      </div>
+    </TooltipProvider>
   );
 }
\ No newline at end of file