A data processing method comprises: receiving a data packet related to a service. The method also comprises determining whether predefined configuration information indicates a priority of the service. The method further comprises in response to the configuration information indicating the priority of the service, adding an indication of the priority into the data packet. The above method can enable the underlying network devices to adopt a suitable strategy to process data packets from services of different priorities, so as to improve the transmission efficiency of the data packets and enhance user experience of the services.