diff --git a/db_migrations/normalize_bom_tri_state.sql b/db_migrations/normalize_bom_tri_state.sql
new file mode 100644
index 0000000..7043680
--- /dev/null
+++ b/db_migrations/normalize_bom_tri_state.sql
@@ -0,0 +1,12 @@
+-- =============================================================================
+-- 一次性迁移：BOM 三态互斥归一（启用/停用/归档 三者互斥）
+--   规则：归档=彻底废弃 → is_archived=True 且 is_enabled=False
+--        启用=在用；停用=有问题/暂停
+--   把历史上“归档但仍启用(True/True)”的行归一到“归档且停用(True/False)”
+-- 执行: docker exec -i inventory_db psql -U test -d inventory_system < 本文件
+-- =============================================================================
+BEGIN;
+UPDATE bom_table
+SET is_enabled = FALSE
+WHERE is_archived = TRUE AND is_enabled = TRUE;
+COMMIT;