diff --git a/src/adapter/adapter.c b/src/adapter/adapter.c
index 5152cea3..91785777 100644
--- a/src/adapter/adapter.c
+++ b/src/adapter/adapter.c
@@ -1410,7 +1410,6 @@ neu_adapter_t *neu_adapter_create(neu_adapter_info_t *info,
     adapter->manager     = manager;
     adapter->trans_kind  = NEURON_TRANS_DATAVAL;
     adapter->node_id     = neu_manager_adapter_id_to_node_id(manager, info->id);
-    adapter->stop        = false;
     adapter->cb_funs     = callback_funs;
 
     rv = nng_mtx_alloc(&adapter->mtx);
@@ -1476,7 +1475,6 @@ int adapter_loop(enum neu_event_io_type type, int fd, void *usr_data)
         if (rv == NNG_ECLOSED) {
             nng_mtx_lock(adapter->mtx);
             adapter->state = ADAPTER_STATE_IDLE;
-            adapter->stop  = true;
             nng_mtx_unlock(adapter->mtx);
 
             log_warn("nng socket closed.");
@@ -1501,7 +1499,6 @@ int adapter_loop(enum neu_event_io_type type, int fd, void *usr_data)
             adapter->plugin_module->intf_funs->uninit(adapter->plugin);
             nng_mtx_lock(adapter->mtx);
             adapter->state = ADAPTER_STATE_IDLE;
-            adapter->stop  = true;
             nng_mtx_unlock(adapter->mtx);
 
             log_info("adapter(%s) exit loop by exit_code=%d", adapter->name,
@@ -1911,10 +1908,6 @@ int neu_adapter_uninit(neu_adapter_t *adapter)
         neu_adapter_driver_uninit((neu_adapter_driver_t *) adapter);
     }
 
-    nng_mtx_lock(adapter->mtx);
-    adapter->stop = true;
-    nng_mtx_unlock(adapter->mtx);
-
     neu_event_del_io(adapter->events, adapter->nng_io);
 
     nng_dialer_close(adapter->dialer);
diff --git a/src/adapter/adapter_internal.h b/src/adapter/adapter_internal.h
index 1b032a93..1fd507ea 100644
--- a/src/adapter/adapter_internal.h
+++ b/src/adapter/adapter_internal.h
@@ -48,14 +48,11 @@ struct neu_adapter {
     nng_mtx *            mtx;
     nng_mtx *            sub_grp_mtx;
     adapter_state_e      state;
-    bool                 stop;
     char *               name;
     neu_manager_t *      manager;
-    nng_pipe             pipe;
     nng_socket           sock;
     nng_dialer           dialer;
     int                  recv_fd;
-    nng_thread *         thrd;
     uint32_t             new_req_id;
     plugin_id_t          plugin_id;
     plugin_kind_e        plugin_kind;