Due to the uncertainty of the traffic road environment, in order to effectively control lane changing behavior, a lane changing control system for autonomous electric vehicles based on sine functions is designed. By utilizing the power signal input from a sinusoidal three-phase inverter control power supply, the lane changing simulation platform and the lane changing information communication encoder are driven to complete the design of various application components for the lane changing control system of an autonomous driving electric vehicle. Screen out key lane changing segments, extract the starting and ending lane changing positions, construct the potential field of the lane centerline, define specific lane changing trajectory clusters, and generate the required electric vehicle lane changing trajectory clusters for control. Based on the sine function calculation results of safe lane changing distance, a feedback controller closed-loop is constructed, and the model is used to implement control and planning of lane changing trajectories. The vehicle lane changing behavior control based on the sine function is achieved, and the design of an autonomous driving electric vehicle lane changing control system is completed by combining various application structures. The experimental results show that the above system will not cause collision problems in autonomous electric vehicles due to delayed lane changing, and can accurately identify obstacles on the road, improving driving safety.