diff --git a/tests/restful_client_v2/api/milvus.py b/tests/restful_client_v2/api/milvus.py
index 9cbddf9295ee6..b50dc4d5e9608 100644
--- a/tests/restful_client_v2/api/milvus.py
+++ b/tests/restful_client_v2/api/milvus.py
@@ -338,6 +338,17 @@ def __init__(self, endpoint, token):
         self.name_list = []
         self.headers = self.update_headers()
 
+    def wait_load_completed(self, collection_name, db_name="default", timeout=5):
+        t0 = time.time()
+        while True and time.time() - t0 < timeout:
+            rsp = self.collection_describe(collection_name, db_name=db_name)
+            if "data" in rsp and "load" in rsp["data"] and rsp["data"]["load"] == "LoadStateLoaded":
+                logger.info(f"collection {collection_name} load completed in {time.time() - t0} seconds")
+                break
+            else:
+                time.sleep(1)
+
+
     @classmethod
     def update_headers(cls, headers=None):
         if headers is not None:
@@ -479,6 +490,92 @@ def collection_drop(self, payload, db_name="default"):
         response = self.post(url, headers=self.update_headers(), data=payload)
         return response.json()
 
+    def refresh_load(self, collection_name, db_name="default"):
+        """Refresh load collection"""
+        url = f"{self.endpoint}/v2/vectordb/collections/refresh_load"
+        payload = {
+            "collectionName": collection_name
+        }
+        if self.db_name is not None:
+            payload["dbName"] = self.db_name
+        if db_name != "default":
+            payload["dbName"] = db_name
+        response = self.post(url, headers=self.update_headers(), data=payload)
+        return response.json()
+
+    def alter_collection_properties(self, collection_name, properties, db_name="default"):
+        """Alter collection properties"""
+        url = f"{self.endpoint}/v2/vectordb/collections/alter_properties"
+        payload = {
+            "collectionName": collection_name,
+            "properties": properties
+        }
+        if self.db_name is not None:
+            payload["dbName"] = self.db_name
+        if db_name != "default":
+            payload["dbName"] = db_name
+        response = self.post(url, headers=self.update_headers(), data=payload)
+        return response.json()
+
+    def drop_collection_properties(self, collection_name, delete_keys, db_name="default"):
+        """Drop collection properties"""
+        url = f"{self.endpoint}/v2/vectordb/collections/drop_properties"
+        payload = {
+            "collectionName": collection_name,
+            "deleteKeys": delete_keys
+        }
+        if self.db_name is not None:
+            payload["dbName"] = self.db_name
+        if db_name != "default":
+            payload["dbName"] = db_name
+        response = self.post(url, headers=self.update_headers(), data=payload)
+        return response.json()
+
+    def alter_field_properties(self, collection_name, field_name, field_params, db_name="default"):
+        """Alter field properties"""
+        url = f"{self.endpoint}/v2/vectordb/collections/fields/alter_properties"
+        payload = {
+            "collectionName": collection_name,
+            "fieldName": field_name,
+            "fieldParams": field_params
+        }
+        if self.db_name is not None:
+            payload["dbName"] = self.db_name
+        if db_name != "default":
+            payload["dbName"] = db_name
+        response = self.post(url, headers=self.update_headers(), data=payload)
+        return response.json()
+
+    def alter_index_properties(self, collection_name, index_name, properties, db_name="default"):
+        """Alter index properties"""
+        url = f"{self.endpoint}/v2/vectordb/indexes/alter_properties"
+        payload = {
+            "collectionName": collection_name,
+            "indexName": index_name,
+            "properties": properties
+        }
+        if self.db_name is not None:
+            payload["dbName"] = self.db_name
+        if db_name != "default":
+            payload["dbName"] = db_name
+        response = self.post(url, headers=self.update_headers(), data=payload)
+        return response.json()
+
+    def drop_index_properties(self, collection_name, index_name, delete_keys, db_name="default"):
+        """Drop index properties"""
+        url = f"{self.endpoint}/v2/vectordb/indexes/drop_properties"
+        payload = {
+            "collectionName": collection_name,
+            "indexName": index_name,
+            "deleteKeys": delete_keys
+        }
+        if self.db_name is not None:
+            payload["dbName"] = self.db_name
+        if db_name != "default":
+            payload["dbName"] = db_name
+        response = self.post(url, headers=self.update_headers(), data=payload)
+        return response.json()
+
 
 class PartitionClient(Requests):
 
@@ -748,7 +845,7 @@ def index_create(self, payload, db_name="default"):
         res = response.json()
         return res
 
-    def index_describe(self, db_name="default", collection_name=None, index_name=None):
+    def index_describe(self, collection_name=None, index_name=None, db_name="default",):
         url = f'{self.endpoint}/v2/vectordb/indexes/describe'
         if self.db_name is not None:
             db_name = self.db_name
diff --git a/tests/restful_client_v2/testcases/test_collection_operations.py b/tests/restful_client_v2/testcases/test_collection_operations.py
index c054d2b2ed47f..4b28f5cfcdab2 100644
--- a/tests/restful_client_v2/testcases/test_collection_operations.py
+++ b/tests/restful_client_v2/testcases/test_collection_operations.py
@@ -1406,3 +1406,155 @@ def test_create_collections_with_invalid_api_key(self):
         }
         rsp = client.collection_create(payload)
         assert rsp['code'] == 1800
+
+
+@pytest.mark.L0
+class TestCollectionProperties(TestBase):
+    """Test collection property operations"""
+
+    def test_refresh_load_collection(self):
+        """
+        target: test refresh load collection
+        method: create collection, refresh load
+        expected: refresh load success
+        """
+        name = gen_collection_name()
+        dim = 128
+        client = self.collection_client
+        payload = {
+            "collectionName": name,
+            "dimension": dim,
+        }
+        rsp = client.collection_create(payload)
+        assert rsp['code'] == 0
+
+        # release collection
+        client.collection_release(collection_name=name)
+        # load collection
+        client.collection_load(collection_name=name)
+        client.wait_load_completed(collection_name=name)
+        # refresh load
+        rsp = client.refresh_load(collection_name=name)
+
+        assert rsp['code'] == 0
+
+    def test_alter_collection_properties(self):
+        """
+        target: test alter collection properties
+        method: create collection, alter properties
+        expected: alter properties success
+        """
+        name = gen_collection_name()
+        dim = 128
+        client = self.collection_client
+        payload = {
+            "collectionName": name,
+            "dimension": dim,
+        }
+        rsp = client.collection_create(payload)
+        assert rsp['code'] == 0
+        client.collection_release(collection_name=name)
+        # alter properties
+        properties = {"mmap.enabled": "true"}
+        rsp = client.alter_collection_properties(name, properties)
+        assert rsp['code'] == 0
+        rsp = client.collection_describe(name)
+        enabled_mmap = False
+        for prop in rsp['data']['properties']:
+            if prop['key'] == "mmap.enabled":
+                assert prop['value'] == "true"
+                enabled_mmap = True
+        assert enabled_mmap
+
+    def test_drop_collection_properties(self):
+        """
+        target: test drop collection properties
+        method: create collection, alter properties, drop properties
+        expected: drop properties success
+        """
+        name = gen_collection_name()
+        dim = 128
+        client = self.collection_client
+        payload = {
+            "collectionName": name,
+            "dimension": dim,
+        }
+        rsp = client.collection_create(payload)
+        assert rsp['code'] == 0
+        client.collection_release(collection_name=name)
+
+        # alter properties
+        properties = {"mmap.enabled": "true"}
+        rsp = client.alter_collection_properties(name, properties)
+        assert rsp['code'] == 0
+        rsp = client.collection_describe(name)
+        enabled_mmap = False
+        for prop in rsp['data']['properties']:
+            if prop['key'] == "mmap.enabled":
+                assert prop['value'] == "true"
+                enabled_mmap = True
+        assert enabled_mmap
+
+        # drop properties
+        delete_keys = ["mmap.enabled"]
+        rsp = client.drop_collection_properties(name, delete_keys)
+        assert rsp['code'] == 0
+        rsp = client.collection_describe(name)
+        enabled_mmap = False
+        for prop in rsp['data']['properties']:
+            if prop['key'] == "mmap.enabled":
+                enabled_mmap = True
+        assert not enabled_mmap
+
+    def test_alter_field_properties(self):
+        """
+        target: test alter field properties
+        method: create collection with varchar field, alter field properties
+        expected: alter field properties success
+        """
+        name = gen_collection_name()
+        dim = 128
+        client = self.collection_client
+        payload = {
+            "collectionName": name,
+            "schema": {
+                "autoId": True,
+                "enableDynamicField": True,
+                "fields": [
+                    {"fieldName": "book_id", "dataType": "Int64", "isPrimary": True, "elementTypeParams": {}},
+                    {"fieldName": "user_id", "dataType": "Int64", "isPartitionKey": True,
+                     "elementTypeParams": {}},
+                    {"fieldName": "word_count", "dataType": "Int64", "elementTypeParams": {}},
+                    {"fieldName": "book_describe", "dataType": "VarChar", "elementTypeParams": {"max_length": "256"}},
+                    {"fieldName": "book_intro", "dataType": "FloatVector", "elementTypeParams": {"dim": f"{dim}"}},
+                    {"fieldName": "image_intro", "dataType": "FloatVector", "elementTypeParams": {"dim": f"{dim}"}},
+                ]
+            }
+        }
+        rsp = client.collection_create(payload)
+        assert rsp['code'] == 0
+        # release collection
+        client.collection_release(collection_name=name)
+
+        # describe collection
+        rsp = client.collection_describe(name)
+        for field in rsp['data']['fields']:
+            if field['name'] == "book_describe":
+                for p in field['params']:
+                    if p['key'] == "max_length":
+                        assert p['value'] == "256"
+
+        # alter field properties
+        field_params = {"max_length": "100"}
+        rsp = client.alter_field_properties(name, "book_describe", field_params)
+        assert rsp['code'] == 0
+
+        # describe collection
+        rsp = client.collection_describe(name)
+        for field in rsp['data']['fields']:
+            if field['name'] == "book_describe":
+                for p in field['params']:
+                    if p['key'] == "max_length":
+                        assert p['value'] == "100"
+
+