The invention provides a transmission processing method and apparatus of service data, and a transmission method and apparatus of service data. The provided transmission processing method applied to a station of a wireless local area network comprises the following steps that: service data with a specified service type are obtained, wherein the service data need to be sent by the station; and notification information is sent to an access point (AP) of a wireless local area network, wherein the notification information is used for instructing the AP to distribute wireless transmission resource for sending the service data with the specified service type preferentially. According to the technical scheme, a technical problem that sending urgent burst data is delayed because the priority of the burst data can not be identified by the AP when the urgent service data are sent according to the correlated technique can be solved, thereby reducing the transmission delay of the urgent service data. Meanwhile, the success rate of burst transmission of the urgent service data is improved.