In order to save construction costs on the premise of the needs of high-speed maglev trains for safe and continuous operation. A setting method of auxiliary stopping area for high-speed maglev based on protection speed curve is proposed. Based on this, an auxiliary stopping area method based on the benchmark running speed curve is presented, which can meet the requirements of safe and continuous operation of the train where multiple target speed curve coexist on the line. The corresponding auxiliary stopping area adjustment method, which has considered the safety requirements of the train operation control system, in engineering application is given, and the simulation calculation is carried out under certain working conditions, the results show that the auxiliary stopping area method can reduce the construction cost of high-speed maglev transportation system to a certain extent.