diff --git a/src/assets/layout/header-logo-b.png b/src/assets/layout/header-logo-b.png
deleted file mode 100644
index 886346f..0000000
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diff --git a/src/assets/layout/header-logo-bb.png b/src/assets/layout/header-logo-bb.png
deleted file mode 100644
index 417967e..0000000
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diff --git a/src/assets/layout/header-logo.png b/src/assets/layout/header-logo.png
index 8c3f683..8370e91 100644
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diff --git a/src/assets/layout/header-logo.psd b/src/assets/layout/header-logo.psd
deleted file mode 100644
index e09db1d..0000000
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diff --git a/src/layout/Header.js b/src/layout/Header.js
index e18aca9..e70bffa 100644
--- a/src/layout/Header.js
+++ b/src/layout/Header.js
@@ -374,12 +374,12 @@ function Header(props) {
   return (
     <div className={`header ${props.matchLogin ? "login" : "nologin"}`}>
       <div className="header__left">
-        {/* <PictureThumb
+        <PictureThumb
           thumbCodes={thumbCode ? [thumbCode] : []}
           thumbConfigs={[{ target: thumbCode }]}
           defaultThumb={require("../assets/layout/header-logo.png")}
           className="header__left-logo"
-        /> */}
+        />
         {isMobile ? (
           <span className="header__left-slogan-mobile"> </span>
         ) : (
@@ -390,7 +390,7 @@ function Header(props) {
                 : "header__left-slogan"
             }`}
           >
-            双重预防管控系统
+            双重预防机制管控系统
             {/* 安全管理系统
             <span style={{ color: "#c99d03" }}>（SMS）</span> */}
             {baseConfig.SYS_NAME}{" "}