diff --git a/backend/services/contribution-service/prisma/migrations/0001_init/migration.sql b/backend/services/contribution-service/prisma/migrations/0001_init/migration.sql
index 926eb191..08fea954 100644
--- a/backend/services/contribution-service/prisma/migrations/0001_init/migration.sql
+++ b/backend/services/contribution-service/prisma/migrations/0001_init/migration.sql
@@ -257,6 +257,8 @@ CREATE TABLE "system_contribution_records" (
     "effective_date" DATE NOT NULL,
     "expire_date" DATE,
     "is_expired" BOOLEAN NOT NULL DEFAULT false,
+    -- 软删除时间戳
+    "deleted_at" TIMESTAMP(3),
     "created_at" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
 
     CONSTRAINT "system_contribution_records_pkey" PRIMARY KEY ("id")
@@ -265,6 +267,7 @@ CREATE TABLE "system_contribution_records" (
 CREATE INDEX "system_contribution_records_system_account_id_idx" ON "system_contribution_records"("system_account_id");
 CREATE INDEX "system_contribution_records_source_adoption_id_idx" ON "system_contribution_records"("source_adoption_id");
 CREATE INDEX "system_contribution_records_source_type_idx" ON "system_contribution_records"("source_type");
+CREATE INDEX "system_contribution_records_deleted_at_idx" ON "system_contribution_records"("deleted_at");
 
 ALTER TABLE "system_contribution_records" ADD CONSTRAINT "system_contribution_records_system_account_id_fkey" FOREIGN KEY ("system_account_id") REFERENCES "system_accounts"("id") ON DELETE RESTRICT ON UPDATE CASCADE;
 
diff --git a/backend/services/contribution-service/prisma/migrations/0002_add_soft_delete_to_system_contribution_records/migration.sql b/backend/services/contribution-service/prisma/migrations/0002_add_soft_delete_to_system_contribution_records/migration.sql
deleted file mode 100644
index 3a75610e..00000000
--- a/backend/services/contribution-service/prisma/migrations/0002_add_soft_delete_to_system_contribution_records/migration.sql
+++ /dev/null
@@ -1,5 +0,0 @@
--- AlterTable: Add soft delete column to system_contribution_records
-ALTER TABLE "system_contribution_records" ADD COLUMN "deleted_at" TIMESTAMP(3);
-
--- CreateIndex
-CREATE INDEX "system_contribution_records_deleted_at_idx" ON "system_contribution_records"("deleted_at");