Abstract: Gas prevention and control is particularly important in the construction of high gas tunnels, especially the prevention and control of gas burst in tunnels. Through theoretical analysis of the principles of gas burst in tunnels, the paper studied and compared the characteristics of gas burst prevention in tunnels and mine roadways. Taking the prevention and control measures of a strong gas burst tunnel project in Sichuan Province as an example, the paper comprehensively analyzed the laws and prevention measures of gas burst tunnels.