A lubricating device with heating function is provided with a heat conduction member between the lubricating device and the movable member, the heat conduction member absorbs the heat generated by the motion of movable member and transmits the heat to the oil tank, so as to reduce the viscosity of the lubrication stored in the oil tank, and consequently, the heated and reduced-in-viscosity lubrication can easily be absorbed by the oil guiding member by capillary action. When the movable member stops moving, the temperature of the lubrication returns to normal and no capillary action will occur, therefore, the lubricating device is capable of controlling start and stop of the action of lubrication transmission by itself without using any other control device, and thus preventing lubrication leakage.