diff --git a/qinling/api/controllers/v1/function.py b/qinling/api/controllers/v1/function.py
index 88d769ae..33220425 100644
--- a/qinling/api/controllers/v1/function.py
+++ b/qinling/api/controllers/v1/function.py
@@ -164,6 +164,9 @@ class FunctionsController(rest.RestController):
             'memory_size': kwargs.get(
                 'memory_size', CONF.resource_limits.default_memory
             ),
+            'timeout': kwargs.get(
+                'timeout', CONF.resource_limits.default_timeout
+            ),
         }
 
         # Check cpu and memory_size values.
diff --git a/qinling/config.py b/qinling/config.py
index 584608c9..0fdd13ae 100644
--- a/qinling/config.py
+++ b/qinling/config.py
@@ -254,6 +254,11 @@ rlimits_opts = [
         default=134217728,
         help='Maximum memory resource(unit: bytes).'
     ),
+    cfg.IntOpt(
+        'default_timeout',
+        default=5,
+        help='Default function execution timeout(unit: seconds)'
+    ),
 ]
 
 
diff --git a/qinling/engine/default_engine.py b/qinling/engine/default_engine.py
index 303c1318..091f2c7f 100644
--- a/qinling/engine/default_engine.py
+++ b/qinling/engine/default_engine.py
@@ -172,7 +172,7 @@ class DefaultEngine(object):
             data = utils.get_request_data(
                 CONF, function_id, function_version, execution_id,
                 rlimit, input, function.entry, function.trust_id,
-                self.qinling_endpoint
+                self.qinling_endpoint, function.timeout
             )
             success, res = utils.url_request(
                 self.session, func_url, body=data
diff --git a/qinling/engine/utils.py b/qinling/engine/utils.py
index 1a6de7f4..c17eac0d 100644
--- a/qinling/engine/utils.py
+++ b/qinling/engine/utils.py
@@ -76,7 +76,7 @@ def url_request(request_session, url, body=None):
 
 
 def get_request_data(conf, function_id, version, execution_id, rlimit, input,
-                     entry, trust_id, qinling_endpoint):
+                     entry, trust_id, qinling_endpoint, timeout):
     """Prepare the request body should send to the worker."""
     ctx = context.get_ctx()
 
@@ -103,6 +103,7 @@ def get_request_data(conf, function_id, version, execution_id, rlimit, input,
         'entry': entry,
         'download_url': download_url,
         'request_id': ctx.request_id,
+        'timeout': timeout,
     }
     if conf.pecan.auth_enable:
         data.update(
diff --git a/qinling/orchestrator/kubernetes/manager.py b/qinling/orchestrator/kubernetes/manager.py
index e8ccff1e..56a1fdde 100644
--- a/qinling/orchestrator/kubernetes/manager.py
+++ b/qinling/orchestrator/kubernetes/manager.py
@@ -484,7 +484,7 @@ class KubernetesManager(base.OrchestratorBase):
 
     def run_execution(self, execution_id, function_id, version, rlimit=None,
                       input=None, identifier=None, service_url=None,
-                      entry='main.main', trust_id=None):
+                      entry='main.main', trust_id=None, timeout=None):
         """Run execution.
 
         Return a tuple including the result and the output.
@@ -493,7 +493,7 @@ class KubernetesManager(base.OrchestratorBase):
             func_url = '%s/execute' % service_url
             data = utils.get_request_data(
                 self.conf, function_id, version, execution_id, rlimit, input,
-                entry, trust_id, self.qinling_endpoint
+                entry, trust_id, self.qinling_endpoint, timeout
             )
             LOG.debug(
                 'Invoke function %s(version %s), url: %s, data: %s',
diff --git a/qinling/tests/unit/api/controllers/v1/test_function.py b/qinling/tests/unit/api/controllers/v1/test_function.py
index da43a696..5675641d 100644
--- a/qinling/tests/unit/api/controllers/v1/test_function.py
+++ b/qinling/tests/unit/api/controllers/v1/test_function.py
@@ -63,6 +63,25 @@ class TestFunctionController(base.APITest):
         )
         self._assertDictContainsSubset(resp.json, body)
 
+    @mock.patch('qinling.storage.file_system.FileSystemStorage.store')
+    def test_post_timeout(self, mock_store):
+        mock_store.return_value = (True, 'fake_md5')
+
+        with tempfile.NamedTemporaryFile() as f:
+            body = {
+                'runtime_id': self.runtime_id,
+                'code': json.dumps({"source": "package"}),
+                'timeout': 3
+            }
+            resp = self.app.post(
+                '/v1/functions',
+                params=body,
+                upload_files=[('package', f.name, f.read())]
+            )
+
+        self.assertEqual(201, resp.status_int)
+        self.assertEqual(3, resp.json['timeout'])
+
     @mock.patch("qinling.utils.openstack.keystone.create_trust")
     @mock.patch('qinling.utils.openstack.keystone.get_swiftclient')
     @mock.patch('qinling.context.AuthHook.before')
@@ -160,6 +179,7 @@ class TestFunctionController(base.APITest):
             "project_id": unit_base.DEFAULT_PROJECT_ID,
             "cpu": cfg.CONF.resource_limits.default_cpu,
             "memory_size": cfg.CONF.resource_limits.default_memory,
+            "timeout": cfg.CONF.resource_limits.default_timeout,
         }
 
         resp = self.app.get('/v1/functions/%s' % db_func.id)
@@ -176,6 +196,7 @@ class TestFunctionController(base.APITest):
             "project_id": unit_base.DEFAULT_PROJECT_ID,
             "cpu": cfg.CONF.resource_limits.default_cpu,
             "memory_size": cfg.CONF.resource_limits.default_memory,
+            "timeout": cfg.CONF.resource_limits.default_timeout,
         }
 
         resp = self.app.get('/v1/functions')
diff --git a/qinling/tests/unit/base.py b/qinling/tests/unit/base.py
index 6ac445e2..b8a6ba13 100644
--- a/qinling/tests/unit/base.py
+++ b/qinling/tests/unit/base.py
@@ -197,6 +197,7 @@ class DbTestCase(BaseTest):
                 'project_id': DEFAULT_PROJECT_ID,
                 'cpu': cfg.CONF.resource_limits.default_cpu,
                 'memory_size': cfg.CONF.resource_limits.default_memory,
+                'timeout': cfg.CONF.resource_limits.default_timeout,
             }
         )
 
diff --git a/qinling/tests/unit/engine/test_default_engine.py b/qinling/tests/unit/engine/test_default_engine.py
index e3e484a8..20c3efe2 100644
--- a/qinling/tests/unit/engine/test_default_engine.py
+++ b/qinling/tests/unit/engine/test_default_engine.py
@@ -443,7 +443,7 @@ class TestDefaultEngine(base.DbTestCase):
         engine_utils_get_request_data_mock.assert_called_once_with(
             mock.ANY, function_id, 0, execution_id, self.rlimit,
             'input', function.entry, function.trust_id,
-            self.qinling_endpoint)
+            self.qinling_endpoint, function.timeout)
         engine_utils_url_request_mock.assert_called_once_with(
             self.default_engine.session, 'svc_url/execute', body='data')
 
diff --git a/qinling/tests/unit/orchestrator/kubernetes/test_manager.py b/qinling/tests/unit/orchestrator/kubernetes/test_manager.py
index 0b2186dc..33d25d3e 100644
--- a/qinling/tests/unit/orchestrator/kubernetes/test_manager.py
+++ b/qinling/tests/unit/orchestrator/kubernetes/test_manager.py
@@ -638,10 +638,11 @@ class TestKubernetesManager(base.DbTestCase):
         mock_request.return_value = (True, 'fake output')
         execution_id = common.generate_unicode_uuid()
         function_id = common.generate_unicode_uuid()
+        timeout = 3
 
         result, output = self.manager.run_execution(
             execution_id, function_id, 0, rlimit=self.rlimit,
-            service_url='FAKE_URL'
+            service_url='FAKE_URL', timeout=timeout
         )
 
         download_url = ('http://127.0.0.1:7070/v1/functions/%s?download=true'
@@ -656,6 +657,7 @@ class TestKubernetesManager(base.DbTestCase):
             'entry': 'main.main',
             'download_url': download_url,
             'request_id': self.ctx.request_id,
+            'timeout': timeout,
         }
 
         mock_request.assert_called_once_with(
diff --git a/qinling_tempest_plugin/services/qinling_client.py b/qinling_tempest_plugin/services/qinling_client.py
index 87f33d47..10289ce1 100644
--- a/qinling_tempest_plugin/services/qinling_client.py
+++ b/qinling_tempest_plugin/services/qinling_client.py
@@ -56,7 +56,7 @@ class QinlingClient(client_base.QinlingClientBase):
         return resp, body
 
     def create_function(self, code, runtime_id, name='', package_data=None,
-                        entry=None):
+                        entry=None, timeout=None):
         """Create function.
 
         Tempest rest client doesn't support multipart upload, so use requests
@@ -67,7 +67,8 @@ class QinlingClient(client_base.QinlingClientBase):
         req_body = {
             'name': name,
             'runtime_id': runtime_id,
-            'code': json.dumps(code)
+            'code': json.dumps(code),
+            'timeout': timeout
         }
         if entry:
             req_body['entry'] = entry
diff --git a/qinling_tempest_plugin/tests/base.py b/qinling_tempest_plugin/tests/base.py
index 7d14707f..5097410e 100644
--- a/qinling_tempest_plugin/tests/base.py
+++ b/qinling_tempest_plugin/tests/base.py
@@ -118,7 +118,8 @@ class BaseQinlingTest(test.BaseTestCase):
         self.addCleanup(os.remove, zip_file)
         return zip_file
 
-    def create_function(self, package_path=None, image=False, md5sum=None):
+    def create_function(self, package_path=None, image=False,
+                        md5sum=None, timeout=None):
         function_name = data_utils.rand_name(
             'function',
             prefix=self.name_prefix
@@ -139,7 +140,8 @@ class BaseQinlingTest(test.BaseTestCase):
                     self.runtime_id,
                     name=function_name,
                     package_data=package_data,
-                    entry='%s.main' % module_name
+                    entry='%s.main' % module_name,
+                    timeout=timeout
                 )
         else:
             resp, body = self.client.create_function(
diff --git a/releasenotes/notes/function-timeout-905dc4b064b73fd3.yaml b/releasenotes/notes/function-timeout-905dc4b064b73fd3.yaml
new file mode 100644
index 00000000..6533190c
--- /dev/null
+++ b/releasenotes/notes/function-timeout-905dc4b064b73fd3.yaml
@@ -0,0 +1,5 @@
+---
+features:
+  - Users can now specify a timeout value for their function to prevent the function from running
+    indefinitely. When the specified timeout is reached, Qinling will terminate the function
+    execution.