Provided are a service data transmission processing method and device applied to a STA of a WLAN, and a service data transmission method and device. The transmission processing method includes that service data of a designated service type required to be sent by the STA is acquired; notification information is sent to an AP of the WLAN, wherein the notification information is used for instructing the AP to preferentially allocate a wireless transmission resource for sending the service data of the designated service type. Technical problems including a delay in sending emergency burst data due to the fact that an AP fails to identify the priority of the burst data during the sending of the emergency service data are solved by means of the technical solution, thereby reducing transmission delay of the emergency service data while improving the success rate of burst transmission of the emergency service data.