diff --git a/backend/services/mining-service/prisma/migrations/0002_minute_to_second/migration.sql b/backend/services/mining-service/prisma/migrations/0002_minute_to_second/migration.sql
new file mode 100644
index 00000000..72d95478
--- /dev/null
+++ b/backend/services/mining-service/prisma/migrations/0002_minute_to_second/migration.sql
@@ -0,0 +1,13 @@
+-- ============================================================================
+-- 将 minuteDistribution 改为 secondDistribution
+-- 支持每秒挖矿分配
+-- ============================================================================
+
+-- 重命名 mining_configs 表的列
+ALTER TABLE "mining_configs" RENAME COLUMN "minuteDistribution" TO "secondDistribution";
+
+-- 重命名 mining_eras 表的列
+ALTER TABLE "mining_eras" RENAME COLUMN "minuteDistribution" TO "secondDistribution";
+
+-- 重命名 mining_records 表的列
+ALTER TABLE "mining_records" RENAME COLUMN "minuteDistribution" TO "secondDistribution";