The invention provides a safety air bag disassembly method based on vehicle model identification. The safety air bag disassembly method comprises the following steps that S1, vehicle brands and models and safety air bag types corresponding to all the vehicle brands and models are stored in a main control system in advance, and the detonation delay time corresponding to electronic safety air bags of all the vehicle brands and models is set; S2, corresponding mapping tables of the vehicle brands and models, the safety air bag types and the detonation delay time corresponding to the electronic safety air bags are established, and identification codes corresponding to all the vehicle brands and models are generated according to the corresponding mapping tables of the vehicle brands and models, the safety air bag types and the detonation delay time corresponding to the electronic safety air bags; and S3, when a vehicle enters a detonation room, the main control system reads the corresponding identification code, identifies the corresponding mapping table of the vehicle brands and models, the safety air bag types and the detonation delay time corresponding to the electronic safety air bags from the code, retrieves the safety air bag type corresponding to the vehicle brand and model according to the mapping table, and disposes the safety air bag accordingly.