The utility model provides a heating device for an automatic impressed watermark printing press. An exothermic electric heating layer and an adiabatic heat-insulating layer are arranged in the inner part of the pinch wheel of the printing press. A power transmission disk which can continuously supply electrical energy for the electric heating layer is arranged on one end of the pinch wheel close to the surface of the pinch wheel, which leads the electric heating layer to provide high temperature for a mould plate which is tightly stuck on the surface of the pinch wheel to lead the pinch wheel to impress printed matter with concave convex watermarks. Serious relative friction and oppression can not generate between the electric heating layer and the mould plate. So the service life of the electric heating layer can be increased. In addition, because of the heat insulation of the heat-insulating layer, the pinch wheel can not form the state of high temperature because of the heat conduction of the electric heating layer to lead the integral device to be safer.