diff --git a/README.md b/README.md
index 2c3f99b..d6e813f 100644
--- a/README.md
+++ b/README.md
@@ -1,17 +1,81 @@
-# xlscfg
+# xlsxcfg
 
-config data from excel sheets
+xlsxcfg load config data from excel sheets.
 
-# Examples
+## Installation
+
+*⚠Currently needs golang sdk*
+
+Run the following command:
+
+`go install github.com/dashengyeah/xlsxcfg/bin/xlsxcfg`
+
+## Config
+
+Default config file `xlsxcfg.yaml`:
+
+```yaml
+# Protocol Buffer source config
+proto:
+  # proto files need to parse.
+  files: ["example.proto"]
+  # proto message import paths.
+  import_path: ["."]
+# xlsx sheet config
+sheet:
+  # rows that is comment, will ignore
+  # in parsing
+  comment_rows: [1]
+  # row contains metadata
+  meta_row: 2
+  # rows contain config data from this
+  data_row_start: 3
+  # sheet name should add this suffix
+  # to find the proto message.
+  type_suffix: "Sheet"
+  # config data rows' list name in the
+  # sheet proto message.
+  list_field_name: "List"
+  # sheet name should add this suffix
+  # to find the data row proto message.
+  row_type_suffix: "SheetRow"
+# output file config
+output:
+  # output dir
+  dir: "."
+  # json
+  write_json: true
+  json_indent: "  "
+  # proto bytes
+  write_bytes: true
+```
+
+## Examples
 
 1. Basic
+
+- Protocol Buffer code:
+
 ```protobuf
+message PhoneNumber {
+    int64  Region = 1;
+    int64  No     = 2;
+    string Ext    = 3;
+}
+
 message MemberSheetRow {
-    int32 ID = 1;
-    string Name = 2;
-    string Address = 3;
+    int32                ID      = 1;
+    string               Name    = 2;
+    string               Address = 3;
+    PhoneNumber          Phone   = 4;
+    repeated string      Cities  = 5;
+    repeated PhoneNumber PP      = 6;
 }
 message MemberSheet {
-    repeated MemberSheetRow List = 1;
+    repeated MemberSheetRow List = 1;
 }
 ```
+
+- Excel sheet:
+
+![image](./doc/example-sheet.png)
diff --git a/bin/xlscfg/xlsxcfg.yaml b/bin/xlscfg/xlsxcfg.yaml
index d145691..fc4124e 100644
--- a/bin/xlscfg/xlsxcfg.yaml
+++ b/bin/xlscfg/xlsxcfg.yaml
@@ -5,7 +5,7 @@ proto:
   # proto message import paths.
   import_path: ["."]
 
-# xls sheet config
+# xlsx sheet config
 sheet:
   # rows that is comment, will ignore
   # in parsing
diff --git a/doc/example-sheet.png b/doc/example-sheet.png
new file mode 100644
index 0000000..392e276
Binary files /dev/null and b/doc/example-sheet.png differ