PURPOSE: To provide a hot press by which cycle time is shortened and production efficiency is improved.

CONSTITUTION: The main body 24 is provided successively and linearly with three chambers of a preheating chamber A, hot press chamber B, and cooling chamber C, and the front and back of each chamber are partitioned by different kinds of doors. The preheating chamber A and the hot press chamber B are provided with heaters 25, 26 for heating molds M in the chambers. The hot press chamber B is also provided with the two shafts of an upper press ram 27 and a lower press ram 28 by which samples inside the molds M are pressurized. Further, a chain-push type conveyor device 32, 33 for transporting the molds M through the chambers are respectively provided in the preheating chamber A and the cooling chamber C.