Canned food heating device and technology

The invention provides a canned food heating device which comprises a heating tank body, a heat conduction disc, a food storage tank, a top cover, a vent pipe and a water adding pipe. The heat conduction disc and the food storage tank are arranged in the heating tank body in a threaded connection mode, and packaged food and tableware which are heated to be eaten are placed in the food storage tank. A self-heating bag, a water adding funnel matched with the upper end of the water adding pipe, a sealing piece, a pulling piece and a double-faced adhesive tape are arranged between the heating tank body and the heat conduction disc. By means of the canned food heating device and technology, the basic requirement for self-heating treatment of canned food can be met, the outer side wall of the food storage structure can be prevented from being wetted, a user can conveniently place the food storage structure on a table top, and therefore the user can conveniently place the food storage structure on the table top. And