diff --git a/modify-displayed-size-after-the-installation-and-download-of-system-update.patch b/modify-displayed-size-after-the-installation-and-download-of-system-update.patch
new file mode 100644
index 0000000..30a9c7d
--- /dev/null
+++ b/modify-displayed-size-after-the-installation-and-download-of-system-update.patch
@@ -0,0 +1,26 @@
+From e896e60bb4e3eae9fa72cd33d8659b7962883379 Mon Sep 17 00:00:00 2001
+From: tanyulong2021 <tanyulong@kylinos.cn>
+Date: Fri, 29 Jul 2022 10:44:19 +0800
+Subject: [PATCH] modify displayed size after the installation and download of
+ system update completed
+
+---
+ plugins/security-updates/upgrade/src/appupdate.cpp | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/plugins/security-updates/upgrade/src/appupdate.cpp b/plugins/security-updates/upgrade/src/appupdate.cpp
+index 14734b0..ad4153e 100644
+--- a/plugins/security-updates/upgrade/src/appupdate.cpp
++++ b/plugins/security-updates/upgrade/src/appupdate.cpp
+@@ -393,7 +393,7 @@ void AppUpdateWid::updateAppUi(QString name)
+     QFontMetrics fontWidth(someInfoEdit->font());//得到每个字符的宽度
+     QString StrMsg = fontWidth.elidedText(chlog, Qt::ElideRight,600);//最大宽度
+     someInfoEdit->append(StrMsg);
+-    if(appAllMsg.msg.allSize == 0)
++    if(appAllMsg.msg.allSize == 0 || appAllMsg.packageSize == 0)
+     {
+         someInfoEdit->append(tr("Download size:")+QString(modifySizeUnit(appAllMsg.packageSize)));
+ //        someInfoEdit->append(tr("下载大小：")+QString(modifySizeUnit(appAllMsg.packageSize)));
+-- 
+2.33.0
+
diff --git a/ukui-control-center.spec b/ukui-control-center.spec
index a4e67d0..e33d6ce 100644
--- a/ukui-control-center.spec
+++ b/ukui-control-center.spec
@@ -1,7 +1,7 @@
 %define debug_package %{nil}
 Name:           ukui-control-center
 Version:        3.0.1
-Release:        26
+Release:        27
 Summary:        utilities to configure the UKUI desktop
 License:        GPL-2+
 URL:            http://www.ukui.org
@@ -97,6 +97,7 @@ Suggests: ukui-settings-daemon
 
 Patch01:Modify-the-icon-displayed-on-the-tray.patch
 Patch02:Add-dependency-ddcutil.patch
+Patch03:modify-displayed-size-after-the-installation-and-download-of-system-update.patch
 
 %description
  The UKUI control center contains configuration applets for the UKUI desktop,
@@ -108,6 +109,7 @@ Patch02:Add-dependency-ddcutil.patch
 %setup -q
 %patch01 -p1
 %patch02 -p1
+%patch03 -p1
 
 %build
 qmake-qt5
@@ -155,6 +157,9 @@ rm -rf $RPM_BUILD_ROOT
 
 
 %changelog
+* Fri Jul 29 2022 tanyulong <tanyulong@kylinos.cn> - 3.0.1-27
+- modify displayed size after the installation and download of system update completed
+
 * Thu Jul 28 2022 tanyulong <tanyulong@kylinos.cn> - 3.0.1-26
 - add dependency ddcutil to make HDMI brightness adjustment available