Distances choice between the centers of adjacent passenger doors for metro vehicle was analyzed, and two kinds of typical proposals were introduced. The two kinds of typical proposals was compared from following aspects: length of end vehicle and the train's compatibility with the platform, the balance of the axles of the vehicle and the gauge condition, arrangement of the seats in the saloon and the train's compatibility with the platform screen doors, suggestion of the distances between the center of adjacent passenger doors for metro vehicle was provided.