diff --git a/docs/CHANGELOG.md b/docs/CHANGELOG.md
index b91541fb..64a14f70 100644
--- a/docs/CHANGELOG.md
+++ b/docs/CHANGELOG.md
@@ -1,6 +1,12 @@
 # Release History
 
-## 2.5.5 (2020-01-06)
+## 2.5.5 (2020-02-05)
+
+**Added**
+
+- feat: save variables and export data to JSON files when specified `--save-tests`
+
+## 2.5.4 (2020-01-06)
 
 **Fixed**
 
diff --git a/httprunner/api.py b/httprunner/api.py
index 8ca3aeaa..bc13fc81 100644
--- a/httprunner/api.py
+++ b/httprunner/api.py
@@ -221,6 +221,9 @@ class HttpRunner(object):
 
         if self.save_tests:
             utils.dump_logs(self._summary, project_mapping, "summary")
+            # save variables and export data
+            vars_out = self.get_vars_out()
+            utils.dump_logs(vars_out, project_mapping, "vars_out")
 
         return self._summary
 
diff --git a/httprunner/cli.py b/httprunner/cli.py
index 3d37589c..a3389955 100644
--- a/httprunner/cli.py
+++ b/httprunner/cli.py
@@ -49,7 +49,7 @@ def main():
         help="Specify report file path, this has higher priority than specifying report dir.")
     parser.add_argument(
         '--save-tests', action='store_true', default=False,
-        help="Save loaded/parsed/summary json data to JSON files.")
+        help="Save loaded/parsed/vars_out/summary json data to JSON files.")
     parser.add_argument(
         '--failfast', action='store_true', default=False,
         help="Stop the test run on the first error or failure.")