diff --git a/build-tools/capi_parser/src/coreImpl/diff/diff_file.py b/build-tools/capi_parser/src/coreImpl/diff/diff_file.py
index ad8ff44000f7ffb60a8f697bf0c4f33877d0fab1..1ca5cbcb4b21c2291f6b387626d57cbf919adfe4 100644
--- a/build-tools/capi_parser/src/coreImpl/diff/diff_file.py
+++ b/build-tools/capi_parser/src/coreImpl/diff/diff_file.py
@@ -128,18 +128,18 @@ def add_new_file(diff_file_path):
     if os.path.isdir(diff_file_path):
         add_file(diff_file_path)
     else:
-        result_map = parse_file_result(parser_include_ast(global_new_dir, [diff_file_path], flag=1))
+        result_map = parse_file_result(parser_include_ast(global_new_dir, [diff_file_path], flag=1), 1)
         for new_info in result_map.values():
-            diff_info_list.extend(judgment_entrance(None, new_info))
+            diff_info_list.extend(judgment_entrance(None, new_info, 1))
 
 
 def del_old_file(diff_file_path):
     if os.path.isdir(diff_file_path):
         del_file(diff_file_path)
     else:
-        result_map = parse_file_result(parser_include_ast(global_old_dir, [diff_file_path], flag=0))
+        result_map = parse_file_result(parser_include_ast(global_old_dir, [diff_file_path], flag=0), 1)
         for old_info in result_map.values():
-            diff_info_list.extend(judgment_entrance(old_info, None))
+            diff_info_list.extend(judgment_entrance(old_info, None, 1))
 
 
 def get_same_file_diff(target_file, old_file_list, new_file_list, old_dir, new_dir):
@@ -176,9 +176,9 @@ def del_file(dir_path):
         if os.path.isdir(file_path):
             del_file(file_path)
         if get_file_ext(i) == '.h':
-            result_map = parse_file_result(parser_include_ast(global_old_dir, [file_path], flag=0))
+            result_map = parse_file_result(parser_include_ast(global_old_dir, [file_path], flag=0), 1)
             for old_info in result_map.values():
-                diff_info_list.extend(judgment_entrance(old_info, None))
+                diff_info_list.extend(judgment_entrance(old_info, None, 1))
 
 
 def add_file(dir_path):
@@ -190,19 +190,29 @@ def add_file(dir_path):
         if os.path.isdir(file_path):
             add_file(file_path)
         if get_file_ext(i) == '.h':
-            result_map = parse_file_result(parser_include_ast(global_new_dir, [file_path], flag=1))
+            result_map = parse_file_result(parser_include_ast(global_new_dir, [file_path], flag=1), 1)
             for new_info in result_map.values():
-                diff_info_list.extend(judgment_entrance(None, new_info))
+                diff_info_list.extend(judgment_entrance(None, new_info, 1))
 
 
-def parse_file_result(result):
+def parse_file_result(result, data_type=0):
+    """
+    Args:
+        result: ***
+        data_type(int): 数据处理类型。1-文件新增或删除；0-其他
+    """
     result_map = {}
     for root_node in result:
-        children_list = root_node['children']
-        for children in children_list:
-            if children["name"] == '':
-                continue
-            result_map.setdefault(f'{children["name"]}-{children["kind"]}', children)
-        del root_node['children']
+        if data_type != 1:
+            parse_file_result_by_child(result_map, root_node)
         result_map.setdefault(f'{root_node["name"]}-{root_node["kind"]}', root_node)
     return result_map
+
+
+def parse_file_result_by_child(result_map, root_node):
+    children_list = root_node['children']
+    for children in children_list:
+        if children["name"] == '':
+            continue
+        result_map.setdefault(f'{children["name"]}-{children["kind"]}', children)
+    del root_node['children']
diff --git a/build-tools/capi_parser/src/coreImpl/diff/diff_processor_node.py b/build-tools/capi_parser/src/coreImpl/diff/diff_processor_node.py
index f9a94a7cee2ead5f1661873681543235f6ed81cf..dd5a1bab583924aa0bf26b2483dad9283a9b0c76 100644
--- a/build-tools/capi_parser/src/coreImpl/diff/diff_processor_node.py
+++ b/build-tools/capi_parser/src/coreImpl/diff/diff_processor_node.py
@@ -388,17 +388,23 @@ def process_variable_const(old, new):
     diff_var_or_con = []
     if 'is_const' in old:
         if old['is_const']:     # 处理常量
+            process_constant_to_variable(old, new, diff_var_or_con)  # 常量改变量
             process_constant_name(old, new, diff_var_or_con)  # 处理常量名
             process_constant_type(old, new, diff_var_or_con)  # 处理常量类型
             process_constant_value(old, new, diff_var_or_con)  # 处理常量值
 
         else:   # 处理变量
+            process_variable_to_constant(old, new, diff_var_or_con)  # 变量改常量
             process_variable_name(old, new, diff_var_or_con)     # 处理变量名
             process_variable_type(old, new, diff_var_or_con)     # 处理变量类型
             process_variable_value(old, new, diff_var_or_con)    # 处理变量值
 
     return diff_var_or_con
 
+def process_variable_to_constant(old, new, diff_variable_list):
+    if new['is_const']:
+        diff_info = wrap_diff_info(old, new, DiffInfo(DiffType.VARIABLE_CHANGE_TO_CONSTANT))
+        diff_variable_list.append(diff_info)
 
 def process_variable_name(old, new, diff_variable_list):
     if old['name'] != new['name']:
@@ -430,6 +436,10 @@ def process_variable_value(old, new, diff_variable_list):
                                    DiffInfo(DiffType.VARIABLE_VALUE_CHANGE))
         diff_variable_list.append(diff_info)
 
+def process_constant_to_variable(old, new, diff_constant_list):
+    if not new['is_const']:
+        diff_info = wrap_diff_info(old, new, DiffInfo(DiffType.CONSTANT_CHANGE_TO_VARIABLE))
+        diff_constant_list.append(diff_info)
 
 def process_constant_name(old, new, diff_constant_list):
     if old['name'] != new['name']:
@@ -510,15 +520,23 @@ process_data = {
 }
 
 
-def judgment_entrance(old, new):
+def judgment_entrance(old, new, data_type=0):
+    """
+    Args:
+        old: ***
+        new: ***
+        data_type(int): 数据处理类型。1-文件新增或删除；0-其他
+    """
     diff_info_list = []
     if old is None and new is None:
         return diff_info_list
     if old is None:
-        diff_info_list.append(wrap_diff_info(old, new, DiffInfo(DiffType.ADD_API)))
+        diff_type = DiffType.ADD_FILE if data_type == 1 else DiffType.ADD_API
+        diff_info_list.append(wrap_diff_info(old, new, DiffInfo(diff_type)))
         return diff_info_list
     if new is None:
-        diff_info_list.append(wrap_diff_info(old, new, DiffInfo(DiffType.REDUCE_API)))
+        diff_type = DiffType.REDUCE_FILE if data_type == 1 else DiffType.REDUCE_API
+        diff_info_list.append(wrap_diff_info(old, new, DiffInfo(diff_type)))
         return diff_info_list
     kind = new['kind']
     diff_info_list.extend(process_comment_str(old, new))
diff --git a/build-tools/capi_parser/src/typedef/diff/diff.py b/build-tools/capi_parser/src/typedef/diff/diff.py
index 1cbd015fcc79f7cffe0953b374abeef3c011a1bb..82133f4fd23fad7fce0ff7efb37f36e22c14ba7b 100644
--- a/build-tools/capi_parser/src/typedef/diff/diff.py
+++ b/build-tools/capi_parser/src/typedef/diff/diff.py
@@ -43,6 +43,8 @@ class TAGS(enum.Enum):
 
 class DiffType(enum.Enum):
     DEFAULT = ''
+    ADD_FILE = 'add file'
+    REDUCE_FILE = 'delete file'
     ADD_API = 'add api'
     REDUCE_API = 'delete api'
     ADD_DOC = 'add doc'
@@ -83,11 +85,13 @@ class DiffType(enum.Enum):
     VARIABLE_TYPE_CHANGE = 'change variable type'
     VARIABLE_VALUE_CHANGE = 'change variable value'
     VARIABLE_CHANGE_CONST = 'Change variable to constant'
+    VARIABLE_CHANGE_TO_CONSTANT = 'change variable to constant'
 
     CONSTANT_NAME_CHANGE = 'change constant name'
     CONSTANT_TYPE_CHANGE = 'change constant type'
     CONSTANT_VALUE_CHANGE = 'change constant value'
     CONST_CHANGE_VARIABLE = 'Change constant to variable'
+    CONSTANT_CHANGE_TO_VARIABLE = 'change constant to variable'
 
     TYPEDEF_NAME_TYPE_CHANGE = 'change typedef name type'