diff --git a/app/Http/Requests/V1/ProcessStep/StoreProcessStepRequest.php b/app/Http/Requests/V1/ProcessStep/StoreProcessStepRequest.php
index 543bf95..0c29e8d 100644
--- a/app/Http/Requests/V1/ProcessStep/StoreProcessStepRequest.php
+++ b/app/Http/Requests/V1/ProcessStep/StoreProcessStepRequest.php
@@ -21,7 +21,7 @@ public function rules(): array
             'is_active' => ['nullable', 'boolean'],
             'connection_type' => ['nullable', 'string', 'max:20'],
             'connection_target' => ['nullable', 'string', 'max:255'],
-            'completion_type' => ['nullable', 'string', 'max:30'],
+            'completion_type' => ['nullable', 'string', 'in:click_complete,selection_complete,inspection_complete'],
         ];
     }
 
diff --git a/app/Http/Requests/V1/ProcessStep/UpdateProcessStepRequest.php b/app/Http/Requests/V1/ProcessStep/UpdateProcessStepRequest.php
index 0fc3ca7..ac81f87 100644
--- a/app/Http/Requests/V1/ProcessStep/UpdateProcessStepRequest.php
+++ b/app/Http/Requests/V1/ProcessStep/UpdateProcessStepRequest.php
@@ -21,7 +21,7 @@ public function rules(): array
             'is_active' => ['nullable', 'boolean'],
             'connection_type' => ['nullable', 'string', 'max:20'],
             'connection_target' => ['nullable', 'string', 'max:255'],
-            'completion_type' => ['nullable', 'string', 'max:30'],
+            'completion_type' => ['nullable', 'string', 'in:click_complete,selection_complete,inspection_complete'],
         ];
     }
 
diff --git a/database/migrations/2026_02_12_140000_codify_completion_type_values.php b/database/migrations/2026_02_12_140000_codify_completion_type_values.php
new file mode 100644
index 0000000..cc2f84a
--- /dev/null
+++ b/database/migrations/2026_02_12_140000_codify_completion_type_values.php
@@ -0,0 +1,43 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Support\Facades\DB;
+
+return new class extends Migration
+{
+    /**
+     * completion_type 한글 값을 영문 코드로 변환
+     */
+    public function up(): void
+    {
+        DB::table('process_steps')
+            ->where('completion_type', '클릭 시 완료')
+            ->update(['completion_type' => 'click_complete']);
+
+        DB::table('process_steps')
+            ->where('completion_type', '선택 완료 시 완료')
+            ->update(['completion_type' => 'selection_complete']);
+
+        DB::table('process_steps')
+            ->where('completion_type', '검사완료 시 완료')
+            ->update(['completion_type' => 'inspection_complete']);
+    }
+
+    /**
+     * 영문 코드를 한글 값으로 롤백
+     */
+    public function down(): void
+    {
+        DB::table('process_steps')
+            ->where('completion_type', 'click_complete')
+            ->update(['completion_type' => '클릭 시 완료']);
+
+        DB::table('process_steps')
+            ->where('completion_type', 'selection_complete')
+            ->update(['completion_type' => '선택 완료 시 완료']);
+
+        DB::table('process_steps')
+            ->where('completion_type', 'inspection_complete')
+            ->update(['completion_type' => '검사완료 시 완료']);
+    }
+};