Abstract: This paper focused on the high-speed adaptability of Communication Based Train Control (CBTC) systems designed for speeds ranging from 160 to 200 km/h in terms of vehicle-ground wireless communication, onboard control models, and trackside equipment applications, and proposed corresponding improvement scheme for the CBTC system after speed improvement. From a theoretical analysis, the traditional CBTC system can meet the requirements of safe operation at speeds of 160-200 km/h after completing adaptation improvements.