In view of the bottleneck of coal seam gas fire prevention and control collaborative control technology faced by roof cutting and pressure relief technology under complex geological conditions of outburst and spontaneous combustion coal seam, taking 3402 working face of Shaqu No.2 Coal Mine as the research object, the key technical parameters of roof cutting and pressure relief under complex geological conditions of outburst and spontaneous combustion coal seam are studied by combining theoretical analysis, numerical simulation and field engineering practice, This paper analyzes the distribution characteristics of stress and displacement field of surrounding rock of roadway under this geological condition, and explores the cooperative prevention and control mechanism of coal seam gas and fire prevention under this complex geological condition. The research results show that when the cutting angle of roadway is 15 ° and the length of cutting seam is 6M, the stress peak value in the stress concentration area of solid coal side after pressure relief is the smallest, and its size decreases by about 56.25%, and at this time the roof rock mass is stable The displacement is the smallest. After spraying polymer plugging material to the retained roadway section, the gas flow passage in the goaf was cut off in time, and the gas concentration in the return air flow was stabilized at 0.36% ~ 0.41%. After optimizing the design parameters of roof gas drainage borehole and goaf buried pipe, the average gas drainage concentration in the goaf was 6.1%, and the average gas drainage purity was 3.1m3/min, which realized efficient gas drainage in the goaf. After spraying atomization inhibitor into the goaf, no CO gas, ethylene, acetylene and other spontaneous combustion symbolic gases were detected, which greatly reduced the risk of residual coal spontaneous combustion, formed the prevention and control idea of "prevention first, combination of prevention and elimination, high coordination" under complex geological conditions, and the collaborative control technology of plugging (tenable), pumping (obtained) and injection (effective), which alleviated the risk of coal spontaneous combustion This paper analyzes the contradiction between gas and fire control in roof cutting and pressure relief roadway under the condition of outburst and spontaneous combustion coal seam, and provides theoretical reference for the maintenance of the same type of roof cutting and pressure relief roadway.