diff --git a/public/favicon-.ico b/public/favicon-.ico
old mode 100755
new mode 100644
index 05b9d163..961f3052
Binary files a/public/favicon-.ico and b/public/favicon-.ico differ
diff --git a/public/favicon.ico b/public/favicon.ico
index 961f3052..ad428fa2 100644
Binary files a/public/favicon.ico and b/public/favicon.ico differ
diff --git a/src/forge/Head/Header.js b/src/forge/Head/Header.js
index 864f1522..33f2614e 100644
--- a/src/forge/Head/Header.js
+++ b/src/forge/Head/Header.js
@@ -390,13 +390,13 @@ class NewHeader extends Component {
             {
               publicNav &&
               <a href={'https://www.ccf.org.cn/'} className={"fl pr15"}>
-                <img src={MainLogo} alt="" style={{ heigth: "40px" }}/>
+                <img src={MainLogo} alt="ccf" />
               </a>
             }
             {
               settings && settings.nav_logo_url ?
-              <a href={settings && settings.new_course.default_url} className={"fl mr50"} style={{minWidth:"45px"}}>
-                <img alt="可控开源社区" className="logoimg" style={{ heigth: "40px" }} src={getImageUrl(`/${settings.nav_logo_url}`)}></img>
+              <a href={settings && settings.new_course.default_url} className={"fl mr50"}>
+                <img alt="可控开源社区" className="logoimg" src={getImageUrl(`/${settings.nav_logo_url}`)}></img>
               </a>
               :
               ""
diff --git a/src/home/Index.jsx b/src/home/Index.jsx
index bd74ab0f..398625aa 100644
--- a/src/home/Index.jsx
+++ b/src/home/Index.jsx
@@ -23,8 +23,13 @@ function Index(props) {
   useEffect(()=>{
     window.addEventListener("scroll",scrollListener);
     getTab();
+    return ComponentWillUnmount;
   },[])
 
+  function ComponentWillUnmount() {
+    window.removeEventListener("scroll",scrollListener);
+  }
+
   function getTab() {
     const url = `/topics.json?topic_type=card`;
     Axios.get(url,{
diff --git a/src/home/SecondEdition.jsx b/src/home/SecondEdition.jsx
index 5df2b646..0baa91ab 100644
--- a/src/home/SecondEdition.jsx
+++ b/src/home/SecondEdition.jsx
@@ -45,7 +45,11 @@ const codes=[
 function SecondEdition({setValue}) {
   useEffect(()=>{
     window.addEventListener('scroll', handleScroll);
+    return ComponentWillUnmount;
   },[])
+  function ComponentWillUnmount() {
+    window.removeEventListener("scroll",handleScroll);
+  }
 
   const [ hadoop , setHadoop ] = useState(false);
   const [ highDevops , setHighDevops ] = useState(false);
diff --git a/src/modules/tpm/TPMIndex.css b/src/modules/tpm/TPMIndex.css
index 40f3a35f..4e2aceab 100644
--- a/src/modules/tpm/TPMIndex.css
+++ b/src/modules/tpm/TPMIndex.css
@@ -227,8 +227,8 @@ body>.-task-title {
 
 .logoimg {
   float: left;
-  min-width: 40px;
-  height: 40px;
+  min-width: 34px;
+  height: 34px;
 }
 
 .headwith100b {