Inverted infrared burner

The utility model relates to an inverted infrared burner, which comprises an air inlet pipe, wherein one end of the air inlet pipe is provided with a threaded interface, and the other end of the air inlet pipe is provided with a burning cavity; the end part of the burning cavity is provided with an infrared burning plate, and the burning cavity is of a tapered structure of which the radius gradually increases from the air inlet pipe end to the infrared burning plate end; the internal included angle of the burning cavity is between 50 degrees and 65 degrees. The burning cavity is arranged into the tapered structure, and the internal included angle of the tapered structure is between 50 degrees and 65 degrees, so that the burning air pressure in the burning cavity is stable, and thus the backfire problem generated by inverted burning of the existing infrared burner can be solved.