Abstract: The setting of variable approach lane will improve road traffic efficiency but at the same time may cause drivers to be emotionally stressed or cause violations and even accidents because the drivers do not understand the road conditions. This phenomenon will have a negative impact on the safety and stable operation of the transportation system. Taking the strategic choice of the traffic control department to set up variable approach lane as the research objective, and combining factors such as the nervousness loss caused by the driver when driving in the variable approach lane, a traffic control department-driver two-party game model is constructed, and the method of evolutionary game theory adopted to analyze both sides of the game choose behavior evolution and stable strategies, obtaining the ideal state of the system and the corresponding parameter conditions, and providing theoretical support for the traffic control department to set up variable approach lanes for strategic selection.