diff --git a/lib-ee/emqx_ee_schema_registry/test/emqx_ee_schema_registry_SUITE.erl b/lib-ee/emqx_ee_schema_registry/test/emqx_ee_schema_registry_SUITE.erl
index 9167fed9e..6d724a4e4 100644
--- a/lib-ee/emqx_ee_schema_registry/test/emqx_ee_schema_registry_SUITE.erl
+++ b/lib-ee/emqx_ee_schema_registry/test/emqx_ee_schema_registry_SUITE.erl
@@ -21,13 +21,16 @@
 %%------------------------------------------------------------------------------
 
 all() ->
-    [{group, avro}, {group, protobuf}].
+    [
+        {group, avro},
+        {group, protobuf}
+    ] ++ sparkplug_tests().
 
 groups() ->
-    AllTCs = emqx_common_test_helpers:all(?MODULE),
+    AllTCsExceptSP = emqx_common_test_helpers:all(?MODULE) -- sparkplug_tests(),
     ProtobufOnlyTCs = protobuf_only_tcs(),
-    TCs = AllTCs -- ProtobufOnlyTCs,
-    [{avro, TCs}, {protobuf, AllTCs}].
+    TCs = AllTCsExceptSP -- ProtobufOnlyTCs,
+    [{avro, TCs}, {protobuf, AllTCsExceptSP}].
 
 protobuf_only_tcs() ->
     [
@@ -35,6 +38,13 @@ protobuf_only_tcs() ->
         t_protobuf_union_decode
     ].
 
+sparkplug_tests() ->
+    [
+        t_sparkplug_decode,
+        t_sparkplug_encode,
+        t_sparkplug_decode_encode_with_message_name
+    ].
+
 init_per_suite(Config) ->
     emqx_config:save_schema_mod_and_names(emqx_ee_schema_registry_schema),
     emqx_mgmt_api_test_util:init_suite(?APPS),
@@ -411,13 +421,18 @@ serde_deletion_calls_destructor_spec(#{serde_type := SerdeType}, Trace) ->
 
 protobuf_unique_cache_hit_spec(#{serde_type := protobuf} = Res, Trace) ->
     #{nodes := Nodes} = Res,
-    CacheEvents = ?of_kind(
+    CacheEvents0 = ?of_kind(
         [
             schema_registry_protobuf_cache_hit,
             schema_registry_protobuf_cache_miss
         ],
         Trace
     ),
+    CacheEvents = [
+        Event
+     || Event <- CacheEvents0,
+        maps:get(name, Event, no_name) =/= ?EMQX_SCHEMA_REGISTRY_SPARKPLUGB_SCHEMA_NAME
+    ],
     ?assertMatch(
         [
             schema_registry_protobuf_cache_hit,
@@ -731,3 +746,113 @@ t_import_config(_Config) ->
         {ok, #{root_key => schema_registry, changed => [Path]}},
         emqx_ee_schema_registry:import_config(RawConf1)
     ).
+
+sparkplug_example_data_base64() ->
+    <<"CPHh67HrMBIqChxjb3VudGVyX2dyb3VwMS9jb3VudGVyMV8xc2VjGPXh67HrMCACUKgDEikKHGNvdW50ZXJfZ3JvdXAxL2NvdW50ZXIxXzVzZWMY9eHrseswIAJQVBIqCh1jb3VudGVyX2dyb3VwMS9jb3VudGVyMV8xMHNlYxj14eux6zAgAlAqEigKG2NvdW50ZXJfZ3JvdXAxL2NvdW50ZXIxX3J1bhj14eux6zAgBVABEioKHWNvdW50ZXJfZ3JvdXAxL2NvdW50ZXIxX3Jlc2V0GPXh67HrMCAFUAAYWA==">>.
+
+sparkplug_example_data() ->
+    #{
+        <<"metrics">> =>
+            [
+                #{
+                    <<"datatype">> => 2,
+                    <<"int_value">> => 424,
+                    <<"name">> => <<"counter_group1/counter1_1sec">>,
+                    <<"timestamp">> => 1678094561525
+                },
+                #{
+                    <<"datatype">> => 2,
+                    <<"int_value">> => 84,
+                    <<"name">> => <<"counter_group1/counter1_5sec">>,
+                    <<"timestamp">> => 1678094561525
+                },
+                #{
+                    <<"datatype">> => 2,
+                    <<"int_value">> => 42,
+                    <<"name">> => <<"counter_group1/counter1_10sec">>,
+                    <<"timestamp">> => 1678094561525
+                },
+                #{
+                    <<"datatype">> => 5,
+                    <<"int_value">> => 1,
+                    <<"name">> => <<"counter_group1/counter1_run">>,
+                    <<"timestamp">> => 1678094561525
+                },
+                #{
+                    <<"datatype">> => 5,
+                    <<"int_value">> => 0,
+                    <<"name">> => <<"counter_group1/counter1_reset">>,
+                    <<"timestamp">> => 1678094561525
+                }
+            ],
+        <<"seq">> => 88,
+        <<"timestamp">> => 1678094561521
+    }.
+
+wait_for_sparkplug_schema_registered() ->
+    wait_for_sparkplug_schema_registered(100).
+
+wait_for_sparkplug_schema_registered(0) ->
+    ct:fail("Timed out waiting for sparkplug schema to be registered");
+wait_for_sparkplug_schema_registered(AttemptsLeft) ->
+    case ets:info(?SERDE_TAB, size) of
+        0 ->
+            timer:sleep(100),
+            wait_for_sparkplug_schema_registered(AttemptsLeft - 1);
+        _ ->
+            ok
+    end.
+
+t_sparkplug_decode(_Config) ->
+    SQL =
+        <<
+            "select\n"
+            "  sparkplug_decode(payload) as decoded\n"
+            "from t\n"
+        >>,
+    PayloadBase64 = sparkplug_example_data_base64(),
+    {ok, _} = create_rule_http(#{sql => SQL}),
+    PayloadBin = base64:decode(PayloadBase64),
+    ExpectedRuleOutput =
+        #{<<"decoded">> => sparkplug_example_data()},
+    wait_for_sparkplug_schema_registered(),
+    emqx:publish(emqx_message:make(<<"t">>, PayloadBin)),
+    Res = receive_action_results(),
+    ?assertMatch(#{data := ExpectedRuleOutput}, Res),
+    ok.
+
+t_sparkplug_encode(Config) ->
+    %% Default message name field is 'Payload'
+    SQL =
+        <<
+            "select\n"
+            "  sparkplug_encode(json_decode(payload)) as encoded\n"
+            "from t\n"
+        >>,
+    PayloadJSONBin = emqx_utils_json:encode(sparkplug_example_data()),
+    {ok, _} = create_rule_http(#{sql => SQL}),
+    ExpectedRuleOutput =
+        #{<<"encoded">> => base64:decode(sparkplug_example_data_base64())},
+    wait_for_sparkplug_schema_registered(),
+    emqx:publish(emqx_message:make(<<"t">>, PayloadJSONBin)),
+    Res = receive_action_results(),
+    ?assertMatch(#{data := ExpectedRuleOutput}, Res),
+    ok.
+
+t_sparkplug_decode_encode_with_message_name(_Config) ->
+    SQL =
+        <<
+            "select\n"
+            "  sparkplug_encode(sparkplug_decode(payload, 'Payload'), 'Payload') as encoded\n"
+            "from t\n"
+        >>,
+    PayloadBase64 = sparkplug_example_data_base64(),
+    PayloadBin = base64:decode(PayloadBase64),
+    {ok, _} = create_rule_http(#{sql => SQL}),
+    ExpectedRuleOutput =
+        #{<<"encoded">> => PayloadBin},
+    wait_for_sparkplug_schema_registered(),
+    emqx:publish(emqx_message:make(<<"t">>, PayloadBin)),
+    Res = receive_action_results(),
+    ?assertMatch(#{data := ExpectedRuleOutput}, Res),
+    ok.