Abstract: Aiming at the problem of insufficient power and insufficient fuel in the operation of existing mine explosion-proof rubber tire vehicles in the roadway, a combination of dynamic theory model and test method is proposed to analyze the optimal power, fuel consumption and energy efficiency. Firstly, the engine parameters were selected according to the actual working conditions. Then the linear regression method in MATLAB software was used to obtain the optimal fourth-order fitting curve equation, and the mathematical model of the engine was established. Based on the engine model, the dynamic system model of the explosion-proof rubber tire vehicle was built and the grade, acceleration and economy were analyzed. Finally, a dynamic test was carried out, and the universal characteristic curve obtained by the experiment was compared with the simulation. The test results show that the engine speed is 1800r/min, which is the best economic area and the best power area. The minimum fuel consumption is 222g/kWh. The mathematical model of the engine and the rubber wheel vehicle power system model are accurate. It laid the foundation for subsequent engine research and vehicle power matching.