diff --git a/designer-base/src/main/java/com/fr/design/EnvChangeEntrance.java b/designer-base/src/main/java/com/fr/design/EnvChangeEntrance.java
index 4300ba039..17d7d5883 100644
--- a/designer-base/src/main/java/com/fr/design/EnvChangeEntrance.java
+++ b/designer-base/src/main/java/com/fr/design/EnvChangeEntrance.java
@@ -65,6 +65,9 @@ import java.util.HashSet;
 import static javax.swing.JOptionPane.QUESTION_MESSAGE;
 
 public class EnvChangeEntrance {
+    private static final String BRANCH_TAG = "#";
+    private static final String BRANCH_BEGIN = "-";
+    private static final int BRANCH_SUB_LENGTH = 13;
 
     public static EnvChangeEntrance getInstance() {
         return HOLDER.singleton;
@@ -375,8 +378,8 @@ public class EnvChangeEntrance {
      * @return 格式化后的版本号
      */
     private String formatBranch(String branch) {
-        if (branch.contains("#")) {
-            return branch.substring(branch.lastIndexOf("-") + 1, branch.length() - 13);
+        if (branch.contains(BRANCH_TAG)) {
+            return branch.substring(branch.lastIndexOf(BRANCH_BEGIN) + 1, branch.length() - BRANCH_SUB_LENGTH);
         }
         return branch;
     }