diff --git a/backend/services/authorization-service/prisma/migrations/20251223000001_increase_local_percentage_precision/migration.sql b/backend/services/authorization-service/prisma/migrations/20251223000001_increase_local_percentage_precision/migration.sql
new file mode 100644
index 00000000..d779d6cb
--- /dev/null
+++ b/backend/services/authorization-service/prisma/migrations/20251223000001_increase_local_percentage_precision/migration.sql
@@ -0,0 +1,4 @@
+-- AlterTable: Increase local_percentage precision from DECIMAL(5,2) to DECIMAL(10,2)
+-- This allows storing percentages greater than 999.99%
+
+ALTER TABLE "monthly_assessments" ALTER COLUMN "local_percentage" TYPE DECIMAL(10, 2);
diff --git a/backend/services/authorization-service/prisma/schema.prisma b/backend/services/authorization-service/prisma/schema.prisma
index e982b780..1911711d 100644
--- a/backend/services/authorization-service/prisma/schema.prisma
+++ b/backend/services/authorization-service/prisma/schema.prisma
@@ -98,7 +98,7 @@ model MonthlyAssessment {
   // 自有团队占比
   localTeamCount        Int      @default(0) @map("local_team_count")
   totalTeamCount        Int      @default(0) @map("total_team_count")
-  localPercentage       Decimal  @default(0) @map("local_percentage") @db.Decimal(5, 2)
+  localPercentage       Decimal  @default(0) @map("local_percentage") @db.Decimal(10, 2)
   localPercentagePass   Boolean  @default(false) @map("local_percentage_pass")
 
   // 超越目标占比