The invention relates to a crowd evacuation simulation method and system based on video data driving. The method comprises the following steps that: obtaining the video record of an appointed area, and utilizing a KLT (Kanade-Lucas-Tomasi) tracking algorithm to extract the initial coordinate, the movement speed, the exit position and the movement path of crow evacuation from the video record; and according to the initial coordinate and the movement speed, initializing an individual to be evacuated, carrying out interleaving access on a relative position between the initial coordinate of each individual and an exit and the movement path to obtain a shortest path from the initial coordinate of each individual to the exit, adopting a social force model to calculate the speed and the direction of the individual in real time on the basis of the above initial coordinate, movement speed and shortest path in real time so as to realize the simulation of a crowd evacuation behavior. The initial setting and the evacuation leading path of simulated evacuation is from a real radio, and the simulated evacuation can be more truly realized so as to provide help for evacuation maneuvering.