Hot drier

The utility model relates to a hot drier. The utility model is provided with a furnace body, and the lower part of the furnace body is provided with a feeding track which is used for the conveyor belt conveying the wrapper to be dried to get into. A heating tube is arranged in two side walls of the feeding track, and the top and bottom of the two sides walls are respectively provided with an orbit. The orbits are respectively and correspondingly embedded with the drawing plates. The drawing plate is provided with a plurality of hollow zones, and a forming frame strip is formed between the hollow zones. Each forming frame strip is locked with a positioning press strip, and one side of the each positioning press strip corresponding to the hollow zone is provided with a groove track. A heat conducting plate or an insulating plate is embedded in the groove track of the two corresponding position press strips. The heat conducting plate or the insulating plate which is embedded in the drawing plate, is easily exchanged based on the height of the wrapping film of the hot drying wrapper.