The invention belongs to agricultural product processing equipment, and particularly relates to a wheat drying and grinding all-in-one machine for deep processing of agricultural products. The wheat drying and grinding all-in-one machine comprises a box body, a first feeding funnel is fixedly connected to the upper surface of a top plate of the box body, a plurality of first air inlet holes are formed in the top plate of the box body, the lower surface of the top plate of the box body is fixedly connected with a first feeding pipe, and the first feeding pipe communicates with the first feedingfunnel; and a first partition plate and a second partition plate are fixedly connected to the inner side wall of the box body, a processing cavity is formed between the first partition plate and thesecond partition plate, the first partition plate is located on the upper side of the second partition plate, and the lower end of the first feeding pipe penetrates through a through hole in the firstpartition plate and extends into the processing cavity. The wheat drying and grinding all-in-one machine has the beneficial effects that wheat is subjected to drying treatment before the wheat is processed, and meanwhile, the wheat is subjected to effective grinding treatment, so that the all-in-one machine is worthy of popularization.