The invention relates to a Train Control and Manager System (TCMS) control-based train speed limiting method, and aims to solve the problems of low train speed limiting control precision and unsmooth speed conversion of a TCMS-based traction force and braking force distribution braking force control mode. According to the method, proper traction force and proper braking force can be distributed according to a current speed limit value and a running speed of a train and a tracking curve for traction force and braking force reference values; and smooth transitioning of the traction force is carried out before the speed reaches the speed limit value, and the proper braking force is applied according to a control curve after the speed exceeds the speed limit value, so that precision and stability of train speed limiting control are improved, and the speed limiting function is guaranteed.