diff --git "a/data/1.toolchains\345\210\235\351\230\266/1.GIT\345\205\245\351\227\250/config.json" "b/data/1.toolchains\345\210\235\351\230\266/1.GIT\345\205\245\351\227\250/config.json"
index 89f61889832c5b4eca3923c569e4a0824e1098a5..d6aaccbb632c8d997dd568a36cd437bf005e5b81 100644
--- "a/data/1.toolchains\345\210\235\351\230\266/1.GIT\345\205\245\351\227\250/config.json"
+++ "b/data/1.toolchains\345\210\235\351\230\266/1.GIT\345\205\245\351\227\250/config.json"
@@ -1,3 +1,5 @@
 {
-    "keywords": []
+  "keywords": [],
+  "node_id": "c-1cf412c0785c4269a2a4cc7634aa101b",
+  "title": "GIT入门"
 }
\ No newline at end of file
diff --git "a/data/1.toolchains\345\210\235\351\230\266/config.json" "b/data/1.toolchains\345\210\235\351\230\266/config.json"
index 89f61889832c5b4eca3923c569e4a0824e1098a5..22e35068e43ff193c879b33e24e0099a9e839983 100644
--- "a/data/1.toolchains\345\210\235\351\230\266/config.json"
+++ "b/data/1.toolchains\345\210\235\351\230\266/config.json"
@@ -1,3 +1,5 @@
 {
-    "keywords": []
+  "keywords": [],
+  "node_id": "c-5995c3ccf1554d1ca4e48da52cf6aed9",
+  "title": "toolchains初阶"
 }
\ No newline at end of file
diff --git "a/data/2.toolchains\344\270\255\351\230\266/config.json" "b/data/2.toolchains\344\270\255\351\230\266/config.json"
index 89f61889832c5b4eca3923c569e4a0824e1098a5..5c2bc98918b04a1ec0fb07711b6790356083a468 100644
--- "a/data/2.toolchains\344\270\255\351\230\266/config.json"
+++ "b/data/2.toolchains\344\270\255\351\230\266/config.json"
@@ -1,3 +1,5 @@
 {
-    "keywords": []
+  "keywords": [],
+  "node_id": "c-671b93fb441b44bd86020a6c5ecb689b",
+  "title": "toolchains中阶"
 }
\ No newline at end of file
diff --git "a/data/3.toolchains\351\253\230\351\230\266/config.json" "b/data/3.toolchains\351\253\230\351\230\266/config.json"
index 89f61889832c5b4eca3923c569e4a0824e1098a5..f17c3d7499082748a5b7f8c7c780e1293dcaa9d1 100644
--- "a/data/3.toolchains\351\253\230\351\230\266/config.json"
+++ "b/data/3.toolchains\351\253\230\351\230\266/config.json"
@@ -1,3 +1,5 @@
 {
-    "keywords": []
+  "keywords": [],
+  "node_id": "c-60527be7abb340d39a1d4a4e780b402c",
+  "title": "toolchains高阶"
 }
\ No newline at end of file
diff --git a/data/config.json b/data/config.json
new file mode 100644
index 0000000000000000000000000000000000000000..f201a93fa860a949a28bf8d1c91cdef048e62ae2
--- /dev/null
+++ b/data/config.json
@@ -0,0 +1,6 @@
+{
+  "tree_name": "Toolchains",
+  "keywords": [],
+  "node_id": "c-9ae45d2c41cd4958a449b8f50a394fcc",
+  "title": "C"
+}
\ No newline at end of file
diff --git a/data/tree.json b/data/tree.json
new file mode 100644
index 0000000000000000000000000000000000000000..9911e4b8b964e8d5f637f0916c36585b66ed1b19
--- /dev/null
+++ b/data/tree.json
@@ -0,0 +1,37 @@
+{
+  "Toolchains": {
+    "node_id": "c-9ae45d2c41cd4958a449b8f50a394fcc",
+    "keywords": [],
+    "children": [
+      {
+        "toolchains初阶": {
+          "node_id": "c-5995c3ccf1554d1ca4e48da52cf6aed9",
+          "keywords": [],
+          "children": [
+            {
+              "GIT入门": {
+                "node_id": "c-1cf412c0785c4269a2a4cc7634aa101b",
+                "keywords": [],
+                "children": []
+              }
+            }
+          ]
+        }
+      },
+      {
+        "toolchains中阶": {
+          "node_id": "c-671b93fb441b44bd86020a6c5ecb689b",
+          "keywords": [],
+          "children": []
+        }
+      },
+      {
+        "toolchains高阶": {
+          "node_id": "c-60527be7abb340d39a1d4a4e780b402c",
+          "keywords": [],
+          "children": []
+        }
+      }
+    ]
+  }
+}
\ No newline at end of file
diff --git a/src/tree.py b/src/tree.py
index 0c64f2dd9d7e3a877c22e2dcbca26d1f6526e43d..ba3287e6e837316c3ec263822d6b503df4bff6fd 100644
--- a/src/tree.py
+++ b/src/tree.py
@@ -21,7 +21,7 @@ def dump_json(p, j, exist_ok=False, override=False):
             print(f"{p} already exist")
             sys.exit(0)
 
-    with open(p, 'w') as f:
+    with open(p, 'w+') as f:
         f.write(json.dumps(j, indent=2, ensure_ascii=False))
 
 
@@ -117,7 +117,7 @@ def gen_tree(data_path):
     cfg_path = os.path.join(data_path, 'config.json')
     cfg = load_json(cfg_path)
     if ensure_node_id(cfg):
-        dump_json(cfg_path, cfg)
+        dump_json(cfg_path, cfg, exist_ok=True, override=True)
         
     if ensure_title(cfg, cfg_path):
         cfg["title"] = "C"