The invention provides an integrated high-temperature cut-off fuel gas ball valve, and belongs to the technical field of control valve. The integrated high-temperature cut-off fuel gas ball valve comprises a cut-off assembly and a temperature sensing assembly, wherein the cut-off assembly arranged in a valve body and the temperature sensing assembly is arranged outside the valve body. According tothe integrated high-temperature cut-off fuel gas ball valve, an integrated valve body cavity is formed in the valve body, so that no connection point exists between the cutting assembly and the fluidinlet, so that the problem of failure of fuel gas cut-off caused by high-temperature damage connecting points is avoided, the reliability of fuel gas cut-off is improved, the valve body and the temperature sensing containing cavity are of an integrated structure, so that the orientation of the temperature sensing containing cavity on the valve body can be changed, so that the direction of the temperature sensing containing cavity towards the easily occurring accident is met, and the adaptability is improved; in addition, the temperature sensing assembly used for sensing temperature is arranged outside the valve body, so that the change of the outside temperature can be rapidly and accurately sensed, so that the fuel gas cut-off sensitivity of the valve is improved, and the use condition of the fuel gas application is better met.