Abstract: With the continuous popularization of electric vehicles, in order to meet the needs of electric vehicle charging under the traffic flow of different time periods, the reasonable planning and construction of charging stations is particularly critical. This paper proposes a way to flexibly deploy container-type mobile charging stations to effectively avoid queuing at highway charging stations during peak traffic hours. This paper firstly analyzes the design and operation mode structure of mobile charging station, and introduces the application mode of mobile charging station in three scenarios; then builds a model for the queuing situation of expressway charging station, and uses the queuing model to analyze the performance characteristics of charging station service system; Form an objective function that takes into account the economic cost and user charging experience, and build a high-speed charging station planning model that considers the flexible deployment of mobile charging stations. Through the forecast data, the number of fixed charging piles is reasonably allocated, and the timing of deploying mobile charging stations is accurately judged. Finally, an example is used to verify the traffic flow data of the State Grid Taizhou Shenhai Expressway charging vehicle service station. In the case of meeting the charging needs of users, the optimization scheme of the highway charging station mode based on the mobile charging station proposed in this paper is different from the traditional single charging station mode optimization scheme. Compared with the fixed charging pile mode, it has better economic benefits and also provides a better space for transformation and upgrading for the later charging demand of the charging station.