Through simulating the scene when passengers are waiting for the bus,an eye tracking equipment was used to estimate the layout of bus body appearance.An experiment was designed to compare the difference between the saccade data before and after subjects' visual cognition.By analyzing the reason of data difference,the relationship between the visual search features and appearance of bus body was achieved.The conclusion can be used to optimize the appearance design of bus body and reduce unnecessary visual interferences,which can enhance the waiting passengers' visual search experience and let them get on the bus without hindrance.