Heating device used in large space

The utility model relates to the technical field of heaters, and discloses a heating device used in a large space, which comprises a bottom connecting base plate body, a bottom fixing support is arranged at the bottom of the bottom connecting base plate body, an external water storage tank is arranged on the outer wall of the bottom connecting base plate body, and heat dissipation connecting strips are arranged on the outer wall of the external water storage tank. A sealing protection plate is arranged on the outer wall of the external water storage tank, a protection net cover is arranged on the outer wall of the sealing protection plate, and a top sealing cover plate is arranged on the outer wall of the protection net cover. According to the heating device used in the large space, the bottom fixing supports distributed in the circumferential array shape are arranged at the bottom of the device, so that the connection stability of the device is enhanced when the device is arranged, and meanwhile, the top lif