Maglev train as a control object, based on railway restriction and comfortable requirement, Automatic Train operation curve was given and dynamics model of maglev train was built. PID control algorithm's disadvantage was analyzed through simulation and using Auto-Disturbance-Rejection (ADRC) control algorithm in train automatic operation system was proposed. From analyze of simulation of tracing the Automatic Train Operation curve, it was can be conclude that the ADRC algorithm can meet the needs of maglev train automatic control.