diff --git a/data/intro_info/skill_tree.json b/data/intro_info/skill_tree.json
deleted file mode 100644
index f04b8fc0a9c539923a6ea61aad6ab1ffef3e8c6b..0000000000000000000000000000000000000000
--- a/data/intro_info/skill_tree.json
+++ /dev/null
@@ -1,42 +0,0 @@
-{
-    "opencv": {
-        "id": "124016032",
-        "username": "CSDNedu"
-    },
-    "algorithm": {
-        "id": "124018103",
-        "username": "CSDNedu"
-    },
-    "c": {
-        "id": "124015351",
-        "username": "CSDNedu"
-    },
-    "pg": {
-        "id": "124017906",
-        "username": "CSDNedu"
-    },
-    "network": {
-        "id": "124017312",
-        "username": "CSDNedu"
-    },
-    "gml": {
-        "id": "124016401",
-        "username": "CSDNedu"
-    },
-    "cloud_native": {
-        "id": "124018359",
-        "username": "CSDNedu"
-    },
-    "neo4j": {
-        "id": "124016274",
-        "username": "CSDNedu"
-    },
-    "java": {
-        "id": "124014706",
-        "username": "CSDNedu"
-    },
-    "python": {
-        "id": "124011216",
-        "username": "CSDNedu"
-    }
-}
\ No newline at end of file
diff --git a/data/package/job/java_backend.json b/data/package/job/java_backend.json
index 11e701ea8b087e1382dcbe8d3ec4adfdc5e405aa..cbfcbe2d61b86d1353514eb9bf8e81704bc12665 100644
--- a/data/package/job/java_backend.json
+++ b/data/package/job/java_backend.json
@@ -21,10 +21,6 @@
         "algorithm",
         "java"
       ],
-      "intro_info": {
-        "id": "123924007",
-        "username": "CSDNedu"
-      },
       "recommends":[
         {
             "type": "job",
@@ -50,10 +46,6 @@
         "algorithm",
         "java"
       ],
-      "intro_info": {
-        "id": "123925015",
-        "username": "CSDNedu"
-      },
       "recommends":[
         {
             "type": "job",
diff --git a/data/package/job/python_backend.json b/data/package/job/python_backend.json
index da9c74e1f91267745ff3b00f0f0f1f4ca7920ccb..57d8661e9418943ed40870a02b6ab9f258906974 100644
--- a/data/package/job/python_backend.json
+++ b/data/package/job/python_backend.json
@@ -19,10 +19,6 @@
         "python",
         "pg"
       ],
-      "intro_info": {
-        "id": "123923401",
-        "username": "CSDNedu"
-      },
       "recommends":[
           {
               "type": "job",
@@ -47,10 +43,6 @@
         "python02",
         "network"
       ],
-      "intro_info": {
-        "id": "123924820",
-        "username": "CSDNedu"
-      },
       "recommends":[
         {
             "type": "job",