diff --git a/dysche-cli/src/main.rs b/dysche-cli/src/main.rs
index 95b223afaf0fbc51fbeec7edfebb04faba2d4c4f..8307fca1c099776a7941e357fc09aa33014fd076 100644
--- a/dysche-cli/src/main.rs
+++ b/dysche-cli/src/main.rs
@@ -12,12 +12,13 @@ enum DyscheErrorCode {
     DENOCPU,
     DENOKERNEL,
     DENOSPDP,
+    DENULL,
 }
 
 fn main() {
     let yml = clap::load_yaml!("param.yml");
     let matches = clap::App::from_yaml(yml).get_matches();
-    let mut ret : Result<i32, DyscheErrorCode> = Ok(0);
+    let mut ret : Result<i32, DyscheErrorCode> = Err(DyscheErrorCode::DENULL);
 
     if let Some(_sc) = matches.subcommand_matches("list") {
         let mut verb = false;
@@ -91,7 +92,7 @@ fn main() {
             match e {
                 _ => {},
             }
-            let _ = clap::App::from_yaml(yml).print_long_help();
+            let _ = clap::App::from_yaml(yml).print_help();
         },
     }
 
diff --git a/dysche-cli/src/param.yml b/dysche-cli/src/param.yml
index b692395e4a24a92cd124958343ced5870f87c7ee..9ffe09a45ca5f57459b1fd67d75cc8bd75ed65b6 100644
--- a/dysche-cli/src/param.yml
+++ b/dysche-cli/src/param.yml
@@ -1,7 +1,7 @@
 name: "dysche-cli"
 version: "0.1.0"
-about: "Cli tools for dysche partition management"
-author: "Guangxing Deng. <dengguangxing@huawei.com>, Liang Li <liliang6@me.com>"
+about: "Intro: Cli tools for dysche partition management"
+author: "Author: Guangxing Deng. <dengguangxing@huawei.com>, Liang Li <liliang6@me.com>"
 
 args:
   - verbose: