(The Wireless Usage Protocol (W20) is the basis for the end of mobile Internet access. "Pa" is a global/global open protocol, through which mobile terminals can access information and services on the Internet. Regarding the practical problem of ordering bus tickets, this paper analyzes the termination principle of the WAP-based mobile phone online ticketing system, and focuses on discussing The key technologies involved in the system termination process are presented, and finally the detailed program process is given and the imitation test is carried out.)