The invention provides a dedusting hopper for a feeding port. The hopper includes a hopper frame, a lower hopper, a pulse dedusting chamber, a fan, a climb ladder, an upper hopper, an air compressor and an electronic control device, wherein the lower hopper, the upper hopper and the climb ladder are all arranged on the hopper frame; the pulse dedusting chamber is arranged on the outer periphery, above the lower hopper, of the upper hopper, and the upper hopper, the pulse dedusting chamber and the lower hopper are connected integrally; an inner platform is arranged between the upper hopper and the lower hopper. According to the dedusting hopper, the lower hopper is used as the dust collecting hopper of the pulse dedusting chamber so as to solve the problem that it is inconvenient to directly feed from the dust collecting hopper; by arranging the inner platform, the replacement and installation of a dedusting cloth bag and a cloth bag cage inside the pulse dedusting chamber can be completed inside the pulse dedusting chamber, which greatly saves the replacement time and reduces the labour intensity; the dedusting hopper has the advantages of a simple structure, easy installation, a good dedusting effect, convenient maintenance and installation, low operation costs, stronger practicality and more convenience.