The invention relates to a hot press. The hot press has the advantages of simple structure, good use effect, low potential safety hazard, and effective ensuring of the material use intensity. The hot press includes a top seat, a bottom seat, an upper die, a lower die and an upper die driving device, a heat source is arranged in the upper die, the top seat is arranged above the bottom seat, the top seat is connected with the bottom seat through a plurality of guide posts, and the upper die driving device comprises an upper die seat, at least one hydraulic cylinder and at least one hydraulic rod. When the hot press is used, the heat source in the upper die is started, and after the heat source reaches a preset temperature, the at least one hydraulic cylinder cooperates with the at least one hydraulic rod to make the upper die move downward to carry out hot pressing on a material. A gas outlet is opened during hot pressing to release a cooling gas source, so the problems of too low compactness and low strength caused by the over extension of the material in the width direction can be effectively prevented; and the cooling gas flow is ejected at two sides of the forward motion direction of the material from top to bottom, so effective caution and protection effects are realized when the misoperation of an operation personnel occurs.