Abstract: In order to improve the safety of gas pipeline,automatic explosion suppression technology is introduced to the gas transmission pipeline.Combining flame detection technology with automatic sprinkling control technology,active explosion suppression of the transmission gas pipeline is achieved.Taking the carbon dioxide extinguishing agent as the extinguishing medium of the explosion suppression sprinklers,the reliability and extinguishing quality of explosion suppression system can be further improved.Laboratory simulation tests prove that explosion suppression device can capture the fire information and sprinkle the extinguishing material quickly.No flame was found 6 m outside the explosion suppression sprinkler.