diff --git a/playbooks/site.yml b/playbooks/site.yml
index d44981a..3dfa346 100644
--- a/playbooks/site.yml
+++ b/playbooks/site.yml
@@ -80,6 +80,34 @@
         mode: '0644'
       tags: apt
 
+    - name: check missing packages
+      shell:
+        cmd: |
+          MISSING=""
+          for pkg in {{ packages }}; do
+            # 先检查原包名
+            if dpkg-query -W -f='${Status}' "$pkg" 2>/dev/null | grep -q "install ok installed"; then
+              continue
+            # 如果原包名不存在，尝试检查带 t64 后缀的版本
+            elif dpkg-query -W -f='${Status}' "${pkg}t64" 2>/dev/null | grep -q "install ok installed"; then
+              continue
+            else
+              MISSING="yes"
+              break
+            fi
+          done
+          if [ -n "$MISSING" ]; then
+            echo "missing"
+          else
+            echo "all_installed"
+          fi
+      args:
+        executable: /bin/bash
+      register: package_check
+      changed_when: false
+      ignore_errors: yes
+      tags: apt
+
     - name: update apt cache
       shell:
         cmd: |
@@ -88,6 +116,7 @@
           else
             apt-get update -y
           fi
+      when: package_check.stdout == "missing"
       ignore_errors: yes
       tags: apt
 
@@ -99,6 +128,7 @@
           else
             apt-get install -y {{ packages }}
           fi
+      when: package_check.stdout == "missing"
       ignore_errors: yes
       tags: apt