The invention relates to a manufacturing method of an intelligent car outer protecting safety bag. The intelligent car outer protecting safety bag comprises a sensor (1), a controller (2), a predictor (3), an electronic igniter (4) and a safety air bag (5), wherein the sensor (1) uploads information to the controller (2), the predictor (3) detects whether collision could occur or not, if not, the information is returned to the sensor (1) without processing, and if so, the electronic igniter (4) ignites, and the safety air bag (5) pops up. The intelligent car outer protecting safety bag has the advantages that reverse through is used, the safety air bag is mounted outside a car, passengers can be protected while damage, caused by the collision, to the car can be reduced to a certain degree, and certain loss can be recouped.