The utility model discloses a feeding device of a purification reaction kettle for blast furnace ash treatment. The utility model discloses a feeding device and belongs to the field of feeding devices, the device comprises an upper substrate, a lower substrate and a dispersing mechanism, a pre-storage chamber is formed in the upper base body; a feeding groove is formed in the upper half part of the upper base body; a feeding hole is formed in the top of the feeding groove; one end of the dispersing mechanism penetrates through the surface of the upper base body through a bearing and is mountedat the output end of a first motor; the lower base body and the upper base body are in butt joint communication through an L-shaped connecting piece, one end of the stirring rod penetrates through the surface of the lower base body through a bearing and is connected with the output end of the second motor, stirring blades are arranged on the upper half portion of the stirring rod, a screw is arranged on the lower half portion of the stirring rod, and a discharging opening is formed in the bottom of the lower base body. The feeding device is reasonable in structural design, raw materials can be fully and evenly ground and dispersed in the feeding process, caking is avoided, and the processing reaction efficiency is improved.