Abstract: In order to prevent coal and gas outburst disaster by using coal temperature prediction technology, this paper constructs the thermal fluid solid coupling model of gas-containing coal based on the basic theories of thermodynamics, seepage mechanics, rock mechanics and the hypothesis of coal and gas outburst.COMSOL software is used to simulate the uniaxial loading process of gas-containing coal body, in which the temperature change of coal body surface under different gas pressure is studied.The results show that when the gas pressure in the coal is 0.1 MPa, that is to say that there is no gas in the coal to exert pressure on the coal body, the surface temperature of the coal body shows an upward trend; when the gas pressure rises to 0.5 MPa, 1.0 MPa, 1.5 MPa, the surface temperature curve of the coal body shows a downward trend, and the greater the gas pressure is, the greater the temperature drop is.The decreasing rate of temperature slows down with time, especially when the gas pressure is not large.