diff --git a/README.md b/README.md
index 925adf5..a3886c5 100644
--- a/README.md
+++ b/README.md
@@ -50,7 +50,7 @@ dt.send_link("link title 001", "link content 001", "https://hatter.ink/favicon.p
 
 Sample, send feed card message:
 ```rust
-dt.send_message(&DingTalkMessage::new_feed_card()
+dt.send_message(DingTalkMessage::new_feed_card()
     .add_feed_card_link(DingTalkMessageFeedCardLink{
         title: "test feed card title 001".into(),
         message_url: "https://hatter.ink/".into(),
@@ -66,7 +66,7 @@ dt.send_message(&DingTalkMessage::new_feed_card()
 
 Sample, send action card message(single btn):
 ```rust
-dt.send_message(&DingTalkMessage::new_action_card("action card 001", "action card text 001")
+dt.send_message(DingTalkMessage::new_action_card("action card 001", "action card text 001")
     .set_action_card_signle_btn(DingTalkMessageActionCardBtn{
         title: "test signle btn title".into(),
         action_url: "https://hatter.ink/".into(),
@@ -76,7 +76,7 @@ dt.send_message(&DingTalkMessage::new_action_card("action card 001", "action car
 
 Sample, send action card message(multi btns):
 ```rust
-dt.send_message(&DingTalkMessage::new_action_card("action card 002", "action card text 002")
+dt.send_message(DingTalkMessage::new_action_card("action card 002", "action card text 002")
     .add_action_card_btn(DingTalkMessageActionCardBtn{
         title: "test signle btn title 01".into(),
         action_url: "https://hatter.ink/".into(),