The invention discloses an explosion-proof high-pressure kettle and belongs to the technical field of high-pressure kettles. The explosion-proof high-pressure kettle comprises a tank body and a tank cover positioned at the upper end of the tank body, wherein the outer side wall of the tank body is provided with a supporting frame; a hydraulic cylinder is fixedly arranged on the supporting frame and is positioned in the horizontal direction of the tank cover; the hydraulic cylinder is connected with a hydraulic pump; a piston rod of the hydraulic cylinder is fixedly connected with a pressing block; the pressing block is in a wedge shape; the lower end surface of the thick end of the pressing block is flush with the upper end surface of the tank cover; and a pressure sensor is arranged in the tank body and is connected with the hydraulic pump. The explosion-proof high-pressure kettle can be used for solving problems that an existing high-pressure kettle is not safe to use, and short of explosion-proof measures.