diff --git a/cinderclient/base.py b/cinderclient/base.py
index e1504ee2f..88ab9511c 100644
--- a/cinderclient/base.py
+++ b/cinderclient/base.py
@@ -403,9 +403,14 @@ class ManagerWithFind(six.with_metaclass(abc.ABCMeta, Manager)):
             search_opts['display_name'] = kwargs['display_name']
 
         found = common_base.ListWithMeta([], None)
+        # list_volume is used for group query, it's not resource's property.
+        list_volume = kwargs.pop('list_volume', False)
         searches = kwargs.items()
-
-        listing = self.list(search_opts=search_opts)
+        if list_volume:
+            listing = self.list(search_opts=search_opts,
+                                list_volume=list_volume)
+        else:
+            listing = self.list(search_opts=search_opts)
         found.append_request_ids(listing.request_ids)
         # Not all resources attributes support filters on server side
         # (e.g. 'human_id' doesn't), so when doing findall some client
diff --git a/cinderclient/shell_utils.py b/cinderclient/shell_utils.py
index e38655881..7bd96e524 100644
--- a/cinderclient/shell_utils.py
+++ b/cinderclient/shell_utils.py
@@ -85,9 +85,10 @@ def find_consistencygroup(cs, consistencygroup):
     return utils.find_resource(cs.consistencygroups, consistencygroup)
 
 
-def find_group(cs, group):
+def find_group(cs, group, **kwargs):
     """Gets a group by name or ID."""
-    return utils.find_resource(cs.groups, group)
+    kwargs['is_group'] = True
+    return utils.find_resource(cs.groups, group, **kwargs)
 
 
 def find_cgsnapshot(cs, cgsnapshot):
diff --git a/cinderclient/tests/unit/test_utils.py b/cinderclient/tests/unit/test_utils.py
index a62425e4a..791b5862c 100644
--- a/cinderclient/tests/unit/test_utils.py
+++ b/cinderclient/tests/unit/test_utils.py
@@ -53,13 +53,13 @@ class FakeManager(base.ManagerWithFind):
         FakeResource('5678', {'name': '9876'})
     ]
 
-    def get(self, resource_id):
+    def get(self, resource_id, **kwargs):
         for resource in self.resources:
             if resource.id == str(resource_id):
                 return resource
         raise exceptions.NotFound(resource_id)
 
-    def list(self, search_opts):
+    def list(self, search_opts, **kwargs):
         return common_base.ListWithMeta(self.resources, fakes.REQUEST_ID)
 
 
@@ -132,6 +132,18 @@ class FindResourceTestCase(test_utils.TestCase):
         output = utils.find_resource(display_manager, 'entity_three')
         self.assertEqual(display_manager.get('4242'), output)
 
+    def test_find_by_group_id(self):
+        output = utils.find_resource(self.manager, 1234, is_group=True,
+                                     list_volume=True)
+        self.assertEqual(self.manager.get('1234', list_volume=True), output)
+
+    def test_find_by_group_name(self):
+        display_manager = FakeDisplayManager(None)
+        output = utils.find_resource(display_manager, 'entity_three',
+                                     is_group=True, list_volume=True)
+        self.assertEqual(display_manager.get('4242', list_volume=True),
+                         output)
+
 
 class CaptureStdout(object):
     """Context manager for capturing stdout from statements in its block."""
diff --git a/cinderclient/tests/unit/v3/test_groups.py b/cinderclient/tests/unit/v3/test_groups.py
index 1946b55e9..72e72a006 100644
--- a/cinderclient/tests/unit/v3/test_groups.py
+++ b/cinderclient/tests/unit/v3/test_groups.py
@@ -101,6 +101,11 @@ class GroupsTest(utils.TestCase):
         cs.assert_called('GET', '/groups/detail?foo=bar')
         self._assert_request_id(lst)
 
+    def test_list_group_with_volume(self):
+        lst = cs.groups.list(list_volume=True)
+        cs.assert_called('GET', '/groups/detail?list_volume=True')
+        self._assert_request_id(lst)
+
     def test_list_group_with_empty_search_opt(self):
         lst = cs.groups.list(
             search_opts={'foo': 'bar', 'abc': None}
@@ -114,6 +119,12 @@ class GroupsTest(utils.TestCase):
         cs.assert_called('GET', '/groups/%s' % group_id)
         self._assert_request_id(grp)
 
+    def test_get_group_with_list_volume(self):
+        group_id = '1234'
+        grp = cs.groups.get(group_id, list_volume=True)
+        cs.assert_called('GET', '/groups/%s?list_volume=True' % group_id)
+        self._assert_request_id(grp)
+
     def test_create_group_from_src_snap(self):
         grp = cs.groups.create_from_src('5678', None, name='group')
         expected = {
diff --git a/cinderclient/tests/unit/v3/test_shell.py b/cinderclient/tests/unit/v3/test_shell.py
index 08bd2c25f..a459c55aa 100644
--- a/cinderclient/tests/unit/v3/test_shell.py
+++ b/cinderclient/tests/unit/v3/test_shell.py
@@ -329,6 +329,11 @@ class ShellTest(utils.TestCase):
                          'group-show 1234')
         self.assert_called('GET', '/groups/1234')
 
+    def test_group_show_with_list_volume(self):
+        self.run_command('--os-volume-api-version 3.25 '
+                         'group-show 1234 --list-volume')
+        self.assert_called('GET', '/groups/1234?list_volume=True')
+
     @ddt.data(True, False)
     def test_group_delete(self, delete_vol):
         cmd = '--os-volume-api-version 3.13 group-delete 1234'
diff --git a/cinderclient/utils.py b/cinderclient/utils.py
index 2ee36958e..e1198a205 100644
--- a/cinderclient/utils.py
+++ b/cinderclient/utils.py
@@ -220,11 +220,14 @@ def print_dict(d, property="Property", formatters=None):
     _print(pt, property)
 
 
-def find_resource(manager, name_or_id):
+def find_resource(manager, name_or_id, **kwargs):
     """Helper for the _find_* methods."""
+    is_group = kwargs.pop('is_group', False)
     # first try to get entity as integer id
     try:
         if isinstance(name_or_id, int) or name_or_id.isdigit():
+            if is_group:
+                return manager.get(int(name_or_id), **kwargs)
             return manager.get(int(name_or_id))
     except exceptions.NotFound:
         pass
@@ -232,6 +235,8 @@ def find_resource(manager, name_or_id):
         # now try to get entity as uuid
         try:
             uuid.UUID(name_or_id)
+            if is_group:
+                return manager.get(name_or_id, **kwargs)
             return manager.get(name_or_id)
         except (ValueError, exceptions.NotFound):
             pass
@@ -243,12 +248,18 @@ def find_resource(manager, name_or_id):
         try:
             resource = getattr(manager, 'resource_class', None)
             name_attr = resource.NAME_ATTR if resource else 'name'
+            if is_group:
+                kwargs[name_attr] = name_or_id
+                return manager.find(**kwargs)
             return manager.find(**{name_attr: name_or_id})
         except exceptions.NotFound:
             pass
 
         # finally try to find entity by human_id
         try:
+            if is_group:
+                kwargs['human_id'] = name_or_id
+                return manager.find(**kwargs)
             return manager.find(human_id=name_or_id)
         except exceptions.NotFound:
             msg = "No %s with a name or ID of '%s' exists." % \
diff --git a/cinderclient/v3/groups.py b/cinderclient/v3/groups.py
index 4bd5643b8..386a6a307 100644
--- a/cinderclient/v3/groups.py
+++ b/cinderclient/v3/groups.py
@@ -14,6 +14,7 @@
 #    under the License.
 
 """Group interface (v3 extension)."""
+from six.moves.urllib import parse
 
 from cinderclient import api_versions
 from cinderclient import base
@@ -106,20 +107,31 @@ class GroupManager(base.ManagerWithFind):
             "/groups/action", body=body)
         return common_base.DictWithMeta(body['group'], resp)
 
-    def get(self, group_id):
+    def get(self, group_id, **kwargs):
         """Get a group.
 
         :param group_id: The ID of the group to get.
         :rtype: :class:`Group`
         """
-        return self._get("/groups/%s" % group_id,
+        query_params = utils.unicode_key_value_to_string(kwargs)
+
+        query_string = ""
+        if query_params:
+            params = sorted(query_params.items(), key=lambda x: x[0])
+            query_string = "?%s" % parse.urlencode(params)
+
+        return self._get("/groups/%s" % group_id + query_string,
                          "group")
 
-    def list(self, detailed=True, search_opts=None):
+    def list(self, detailed=True, search_opts=None, list_volume=False):
         """Lists all groups.
 
         :rtype: list of :class:`Group`
         """
+        if list_volume:
+            if not search_opts:
+                search_opts = {}
+            search_opts['list_volume'] = True
         query_string = utils.build_query_param(search_opts)
 
         detail = ""
diff --git a/cinderclient/v3/shell.py b/cinderclient/v3/shell.py
index 4f85097f0..57586e447 100644
--- a/cinderclient/v3/shell.py
+++ b/cinderclient/v3/shell.py
@@ -831,13 +831,26 @@ def do_group_list(cs, args):
 
 
 @api_versions.wraps('3.13')
+@utils.arg('--list-volume',
+           dest='list_volume',
+           metavar='<False|True>',
+           nargs='?',
+           type=bool,
+           const=True,
+           default=False,
+           help='Shows volumes included in the group.',
+           start_version='3.25')
 @utils.arg('group',
            metavar='<group>',
            help='Name or ID of a group.')
 def do_group_show(cs, args):
     """Shows details of a group."""
     info = dict()
-    group = shell_utils.find_group(cs, args.group)
+    if getattr(args, 'list_volume', None):
+        group = shell_utils.find_group(cs, args.group,
+                                       list_volume=args.list_volume)
+    else:
+        group = shell_utils.find_group(cs, args.group)
     info.update(group._info)
 
     info.pop('links', None)
diff --git a/releasenotes/notes/support-show-group-with-volume-ad820b8442e8a9e8.yaml b/releasenotes/notes/support-show-group-with-volume-ad820b8442e8a9e8.yaml
new file mode 100644
index 000000000..9bed0f8dd
--- /dev/null
+++ b/releasenotes/notes/support-show-group-with-volume-ad820b8442e8a9e8.yaml
@@ -0,0 +1,5 @@
+---
+features:
+  - |
+      Support show group with ``list-volume`` argument.
+      The command is : cinder group-show {group_id} --list-volume