The invention provides an automobile active safety multi-layer and multi-set outer anti-collision airbag device formed by assembling a multi-layer and multi-set front airbag, an extending airbag back, two side airbags, a rear airbag, a radar, a single-chip microcomputer, a signal connecting line, a gas distributor, gas conveying pipelines, multiple small gas bottles, airbag fixing devices and the like. The multi-layer and multi-set front airbag of an automobile is formed by connecting multiple independent airbag bodies. The front airbag is shaped like a barrel placed in an inverted mode from appearance. Each airbag body is made of macromolecule fiber shell fabric and a net. The size of the nets is smaller than that of the airbag bodies. The airbag bodies are shrunk in a vacuum mode. When the automobile travels at a high speed and is within a critical distance, the radar is started, the single-chip microcomputer transmits signals, the gas distributor is opened, gas in the small gas bottles enters airbag pipelines of independent outer, middle and inner layers of the gas distributor through pipelines, and is conveyed to the multiple layers of independent airbag bodies at the other end of the gas distributor, and the airbag body of the outmost layer of the multi-layer and multi-set front airbag and the extending airbag back are integrated; the airbag back is inflated to extend to a front windshield. The two side airbags and the rear airbag of the automobile are made of single-layer airbag bodies and nets. A control system is just like the front airbag.