Abstract: Rail vehicle door system is an important subsystem in rail transit system equipment，the fault prediction and health management are important means to ensure the safe and reliable operation of vehicle door system. Starting from the structure of the rail vehicle door system，the typical door faults are classified，including the switch door obstacle detection fault，the lock-in position switch fault，the three-second non-unlocking fault，the motor position encoder fault and the controller drive circuit MOS tube short-circuit fault. Aiming at the above-mentioned typical faults， the corresponding management frameworks of fault prediction and health management are proposed， the main points include data acquisition，data preprocessing，feature value extraction，condition monitoring and health assessment，as well as the optimal vehicle door maintenance.