diff --git a/src/src/mixins/phystonPrompt/groupTagsMixin.js b/src/src/mixins/phystonPrompt/groupTagsMixin.js
index cd612d1..b496c56 100644
--- a/src/src/mixins/phystonPrompt/groupTagsMixin.js
+++ b/src/src/mixins/phystonPrompt/groupTagsMixin.js
@@ -105,17 +105,19 @@ export default {
                     extraNetwork.items.forEach(item => {
                         item.dirnameFormat = item.dirname.replaceAll('\\', '/')
                     })
-                    let dirs = []
-                    let splitArrays = extraNetwork.items.map(item => item.dirnameFormat.split('/'))
-                    let minLength = Math.min(...splitArrays.map(item => item.length))
+                    let prefixPath = common.getSamePrefixPath([...new Set(extraNetwork.items.map(item => item.dirnameFormat))])
+                    let baseDirs = []
                     extraNetwork.items.forEach(item => {
-                        item.base_dirname = item.dirnameFormat.split('/').slice(minLength).join('/')
-                        dirs.push(item.base_dirname)
+                        let baseDirname = item.dirnameFormat.replace(prefixPath, '')
+                        if (baseDirname === '') baseDirname = '@root'
+                        baseDirname = baseDirname.replace(/^\//, '')
+                        baseDirs.push(baseDirname)
+                        item.base_dirname = baseDirname
                     })
-                    dirs = [...new Set(dirs)]
-                    dirs = dirs.filter(item => item !== '')
-                    if (dirs.length > 1) {
-                        dirs.forEach(dir => {
+                    baseDirs = [...new Set(baseDirs)]
+
+                    if (baseDirs.length > 1) {
+                        baseDirs.forEach(dir => {
                             let subDirGroup = {
                                 color: '',
                                 name: dir,
diff --git a/src/src/utils/common.js b/src/src/utils/common.js
index 3b7fed2..f746b01 100644
--- a/src/src/utils/common.js
+++ b/src/src/utils/common.js
@@ -632,4 +632,17 @@ export default {
     getTagsColorKey(groupName, subGroupName) {
         return groupName + '||' + subGroupName
     },
+
+    getSamePrefixPath(arr)  {
+        if (arr.length <= 0) return ''
+        const arr1 = arr.map(item => item.split("/"));
+        const arr2 = arr1[0];
+        const arr3 = arr1.slice(1);
+        const result = arr2.filter((item, index) => {
+            return arr3.every(item2 => {
+                return item2[index] === item;
+            });
+        });
+        return result.join("/");
+    }
 }
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