Abstract: Subway emergency evacuation is a crucial technical problem for disaster mitigation. It can be clone effectively if people in the disaster area can make use emergency evacuation of the sign system in time when disasters suddenly happen. On the basis of the investigation of the medium and large subway stations at home and abroad, this paper analyze the present problems of emergency evacuation sign system of the domestic subway and give the optimization advices by comparing with the overseas system in terms of standardization, correctness and influence of color, etc.