diff --git a/api/.env.example b/backend/.env.example
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rename from api/.env.example
rename to backend/.env.example
diff --git a/api/Makefile b/backend/Makefile
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rename from api/Makefile
rename to backend/Makefile
diff --git a/api/README.md b/backend/README.md
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rename from api/README.md
rename to backend/README.md
diff --git a/api/api/Dockerfile b/backend/api/Dockerfile
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rename to backend/api/Dockerfile
diff --git a/api/api/config/config.go b/backend/api/config/config.go
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rename from api/api/config/config.go
rename to backend/api/config/config.go
diff --git a/api/api/go.mod b/backend/api/go.mod
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rename to backend/api/go.mod
diff --git a/api/api/handlers/handler.go b/backend/api/handlers/handler.go
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rename to backend/api/handlers/handler.go
diff --git a/api/api/handlers/health.go b/backend/api/handlers/health.go
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rename from api/api/handlers/health.go
rename to backend/api/handlers/health.go
diff --git a/api/api/handlers/user.go b/backend/api/handlers/user.go
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rename from api/api/handlers/user.go
rename to backend/api/handlers/user.go
diff --git a/api/api/main.go b/backend/api/main.go
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rename to backend/api/main.go
diff --git a/api/api/models/user.go b/backend/api/models/user.go
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rename from api/api/models/user.go
rename to backend/api/models/user.go
diff --git a/api/api/router/router.go b/backend/api/router/router.go
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rename from api/api/router/router.go
rename to backend/api/router/router.go
diff --git a/backend/desc.md b/backend/desc.md
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index 0000000..b2fbdf2
--- /dev/null
+++ b/backend/desc.md
@@ -0,0 +1,9 @@
+我需要你搭建一个后台 restful api 的单机多服务工程，涉及技术：
+
+- golang:1.25.8-alpine3.23
+
+- redis:8.6.2-alpine
+
+- postgres:18.3-alpine3.23
+
+先搭建好工程，不用考虑业务逻辑。
\ No newline at end of file
diff --git a/api/docker-compose.yml b/backend/docker-compose.yml
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rename from api/docker-compose.yml
rename to backend/docker-compose.yml
diff --git a/api/migrations/001_init.sql b/backend/migrations/001_init.sql
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rename from api/migrations/001_init.sql
rename to backend/migrations/001_init.sql