diff --git a/cinder/api/openstack/api_version_request.py b/cinder/api/openstack/api_version_request.py
index e2e99fb8599..667a7d3dc48 100644
--- a/cinder/api/openstack/api_version_request.py
+++ b/cinder/api/openstack/api_version_request.py
@@ -74,6 +74,7 @@ REST_API_VERSION_HISTORY = """
     * 3.22 - Add filtering based on metadata for snapshot listing.
     * 3.23 - Allow passing force parameter to volume delete.
     * 3.24 - Add workers/cleanup endpoint.
+    * 3.25 - Add ``volumes`` field to group list/detail and group show.
 """
 
 # The minimum and maximum versions of the API supported
@@ -81,7 +82,7 @@ REST_API_VERSION_HISTORY = """
 # minimum version of the API supported.
 # Explicitly using /v1 or /v2 enpoints will still work
 _MIN_API_VERSION = "3.0"
-_MAX_API_VERSION = "3.24"
+_MAX_API_VERSION = "3.25"
 _LEGACY_API_VERSION1 = "1.0"
 _LEGACY_API_VERSION2 = "2.0"
 
diff --git a/cinder/api/openstack/rest_api_version_history.rst b/cinder/api/openstack/rest_api_version_history.rst
index 367415a3370..f0380aab9d1 100644
--- a/cinder/api/openstack/rest_api_version_history.rst
+++ b/cinder/api/openstack/rest_api_version_history.rst
@@ -264,3 +264,7 @@ user documentation.
   ``id``, ``host``, ``binary``, and ``cluster_name``.  These are not the
   services that will be performing the cleanup, but the services that will be
   cleaned up or couldn't be cleaned up.
+
+3.25
+----
+  Add ``volumes`` field to group list/detail and group show.
diff --git a/cinder/api/v3/views/groups.py b/cinder/api/v3/views/groups.py
index 1d012804b02..264c7794980 100644
--- a/cinder/api/v3/views/groups.py
+++ b/cinder/api/v3/views/groups.py
@@ -14,6 +14,7 @@
 #    under the License.
 
 from cinder.api import common
+from cinder import utils
 
 
 class ViewBuilder(common.ViewBuilder):
@@ -64,6 +65,12 @@ class ViewBuilder(common.ViewBuilder):
             group_ref['group']['group_snapshot_id'] = group.group_snapshot_id
             group_ref['group']['source_group_id'] = group.source_group_id
 
+        # Add volumes if min version is greater than or equal to 3.25.
+        if req_version.matches("3.25", None):
+            if utils.get_bool_param('list_volume', request.params):
+                group_ref['group']['volumes'] = [volume.id
+                                                 for volume in group.volumes]
+
         return group_ref
 
     def _list_view(self, func, request, groups):
diff --git a/cinder/tests/unit/api/v3/test_groups.py b/cinder/tests/unit/api/v3/test_groups.py
index d94df7798c9..cb4c7723d3b 100644
--- a/cinder/tests/unit/api/v3/test_groups.py
+++ b/cinder/tests/unit/api/v3/test_groups.py
@@ -144,6 +144,49 @@ class GroupsAPITestCase(test.TestCase):
         self.assertEqual([fake.VOLUME_TYPE_ID],
                          res_dict['group']['volume_types'])
 
+    @mock.patch('cinder.objects.volume_type.VolumeTypeList.get_all_by_group')
+    @mock.patch('cinder.objects.volume.VolumeList.get_all_by_generic_group')
+    def test_show_group_with_list_volume(self, mock_vol_get_all_by_group,
+                                         mock_vol_type_get_all_by_group):
+        volume_objs = [objects.Volume(context=self.ctxt, id=i)
+                       for i in [fake.VOLUME_ID]]
+        volumes = objects.VolumeList(context=self.ctxt, objects=volume_objs)
+        mock_vol_get_all_by_group.return_value = volumes
+
+        vol_type_objs = [objects.VolumeType(context=self.ctxt, id=i)
+                         for i in [fake.VOLUME_TYPE_ID]]
+        vol_types = objects.VolumeTypeList(context=self.ctxt,
+                                           objects=vol_type_objs)
+        mock_vol_type_get_all_by_group.return_value = vol_types
+
+        # If the microversion >= 3.25 and "list_volume=True", "volumes" should
+        # be contained in the response body.
+        req = fakes.HTTPRequest.blank('/v3/%s/groups/%s?list_volume=True' %
+                                      (fake.PROJECT_ID, self.group1.id),
+                                      version='3.25')
+        res_dict = self.controller.show(req, self.group1.id)
+        self.assertEqual(1, len(res_dict))
+        self.assertEqual([fake.VOLUME_ID],
+                         res_dict['group']['volumes'])
+
+        # If the microversion >= 3.25 but "list_volume" is missing, "volumes"
+        # should not be contained in the response body.
+        req = fakes.HTTPRequest.blank('/v3/%s/groups/%s' %
+                                      (fake.PROJECT_ID, self.group1.id),
+                                      version='3.25')
+        res_dict = self.controller.show(req, self.group1.id)
+        self.assertEqual(1, len(res_dict))
+        self.assertIsNone(res_dict['group'].get('volumes', None))
+
+        # If the microversion < 3.25, "volumes" should not be contained in the
+        # response body.
+        req = fakes.HTTPRequest.blank('/v3/%s/groups/%s?list_volume=True' %
+                                      (fake.PROJECT_ID, self.group1.id),
+                                      version='3.24')
+        res_dict = self.controller.show(req, self.group1.id)
+        self.assertEqual(1, len(res_dict))
+        self.assertIsNone(res_dict['group'].get('volumes', None))
+
     def test_show_group_with_group_NotFound(self):
         req = fakes.HTTPRequest.blank('/v3/%s/groups/%s' %
                                       (fake.PROJECT_ID,
diff --git a/releasenotes/notes/improvement-to-get-group-detail-0e8b68114e79a8a2.yaml b/releasenotes/notes/improvement-to-get-group-detail-0e8b68114e79a8a2.yaml
new file mode 100644
index 00000000000..b1d602863a2
--- /dev/null
+++ b/releasenotes/notes/improvement-to-get-group-detail-0e8b68114e79a8a2.yaml
@@ -0,0 +1,5 @@
+---
+features:
+  - Added support for querying group details with volume ids
+    which are in this group.
+    For example, "groups/{group_id}?list_volume=True".