The invention relates to an automatic glass breaking device. The automatic glass breaking device comprises a shell which is filled with gas generation agent; an igniter for igniting the gas generation agent is arranged in the shell and is electrically connected with an external power supply; and a gas outlet for spraying out gas generated during the burning of the gas generation agent is arrangedon the side of the shell, which faces glass to be broken. The invention also discloses an automatic glass breaking escape system using the device and a vehicle using the escape system. The invention can automatically induce and break all glass for quick escape in the emergency, such as fire and the like; therefore, the invention can be widely applied to air conditioning buses, sedan cars, entertainment places, western-style restaurants and other places closed with glass.