Aiming at the disadvantage that traditional methods can’t breach the burglary resistant safety door availably, quickly and safely in the Counter-terrorist actions, suggest using air-blast wave to breach the door. The directional air-blast produced by detonator explosive impact the door target, generate impulse and overpressure instantly, make the door deformed badly, disengage from the doorframe and breach the door instantly. Analyze three key technologies, the design of warhead, the space pole and explosive mode, and evaluate the damage caused by air-blast wave. The results indicate that this method can solve the problem well in the counter-terrorist actions.