The invention relates to the field of automobile collision buffering equipment and relates to an active extending type automobile collision buffering device. The invention aims at solving the problemthat the length of a front longitudinal beam of the traditional automobile is not enough during a collision. According to the active extending type automobile collision buffering device, an energy absorbing device of an automobile is expanded outside the automobile; by mounting one set of telescopic buffering device between an automobile sill and an automobile front bumper, the buffering device and the bumper can extend out of the automobile to improve an energy absorbing space effect by using a manual device or an automatic control device before a collision occurs; and therefore, the impact force during the collision is reduced, and safeties of a driver and an automobile body are protected.