diff --git a/third_party/tcp/tcp_client.go b/third_party/tcp/tcp_client.go
index 2402db1..55a92d9 100644
--- a/third_party/tcp/tcp_client.go
+++ b/third_party/tcp/tcp_client.go
@@ -58,7 +58,8 @@ func (c *TcpClient) Close() {
 	}
 }
 func (c *TcpClient) Send(data []byte) error {
-	if c.conn == nil {
+
+	if c == nil || c.conn == nil {
 		slog.Error("tcp client send error,conn is nil")
 		return fmt.Errorf("TCP未连接车载PC仿真")
 	}