diff --git a/doc.go b/doc.go
new file mode 100644
index 0000000000000000000000000000000000000000..3c347f0f8f0e6808c0c4ebdf21f916aa55d0967b
--- /dev/null
+++ b/doc.go
@@ -0,0 +1,18 @@
+/*
+ * Copyright 2018 Xiaomi, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+// Package soar is a command-line tool for SQL optimizing and rewriting.
+package soar
diff --git a/doc/install.md b/doc/install.md
index daf63025dab6d0d1d3f0b457c92d80c9ab22a6a8..b4e04aef197fceb95729b74a03801c4797b5e7d8 100644
--- a/doc/install.md
+++ b/doc/install.md
@@ -27,7 +27,7 @@ chmod a+x soar
 ### 生成二进制文件
 
 ```bash
-go get github.com/XiaoMi/soar/...
+go get -d github.com/XiaoMi/soar
 cd ${GOPATH}/src/github.com/XiaoMi/soar && make
 ```
 
diff --git a/doc/install_en.md b/doc/install_en.md
index 95ed3731bd22d08caea66763797e7eaf7df88651..08363fa4ddc56e47b32a14fffbd77262611a64a5 100644
--- a/doc/install_en.md
+++ b/doc/install_en.md
@@ -11,7 +11,7 @@ chmod a+x soar
 ## Build From Source
 
 ```bash
-go get github.com/XiaoMi/soar/...
+go get -d github.com/XiaoMi/soar
 cd ${GOPATH}/src/github.com/XiaoMi/soar && make
 ```