To solve the problems in the traditional emergency signal optimization scheduling method, such as the long task time and low reliability, a genetic algorithm-based emergency signal optimization scheduling method for traffic wireless communication system after a strong earthquake is proposed. The communication occupation time of different sub-nodes of a traffic wireless communication system after a strong earthquake is segmented, and an emergency signal scheduling model based on the genetic algorithm is constructed by judging whether the task scheduling table can be updated. According to the related characteristics of the model, the genetic algorithm is used to solve the emergency signal scheduling model, and the optimal emergency signal scheduling scheme is obtained. The simulation results show that the proposed method can shorten the task scheduling time and adjust the reliability of emergency signal scheduling.