The invention discloses a manual soil grinding device which comprises a base, a fence frame and a grinder, wherein the base and the fence frame are arranged oppositely; a liner is arranged between thebase and the fence frame; the fence frame is composed of baffle plates and first side columns and second side columns arranged around the baffle plates; the grinder is arranged in a space formed between the base and the fence frame; one of the second side columns of the fence frame is hinged and fixed to the base; and a supporting column for supporting the base is arranged at the bottom of the base. The manual soil grinding device disclosed by the invention is simple in structure, convenient to use and time- and labor-saving, and reduces cross contamination of samples effectively.