The invention belongs to the field of coffee bean processing equipment, and particularly relates to coffee bean cleaning and grading equipment. The coffee bean cleaning and grading equipment comprises a basic structure, an S-shaped grading tank, a first-stage discharge tank, a second-stage discharge tank, a water inlet pipe, soaking pools and blanking pipes, wherein a plurality of soaking pools are arranged beside the basic structure, the blanking pipes are respectively arranged on the soaking pools, the S-shaped grading tank is arranged on the basic structure, so as to form a blocking layer on the basic structure, the water inlet pipe is arranged on the first-stage grading tank of the S-shaped grading tank, the third-stage grading tank of the S-shaped grading tank is led to the outside of the basic structure, and the first-stage discharge tank and the second-stage discharge tank are arranged on the third-stage grading tank of the S-shaped grading tank in sequence. According to the coffee bean cleaning and grading equipment, cleaning and grading are integrally processed, so that the processing steps are reduced, and the processing efficiency is improved; the coffee bean cleaning and grading equipment has the advantages of simple structure, low manufacturing cost, convenience in operation, good cleaning effect, high unqualified bean grading rate, low maintenance cost and no consumption of electric energy; the coffee bean cleaning and grading equipment satisfies various requirements of a coffee bean processing plant and is easy to widely favor; the quality of finished products is guaranteed; the processing cost is reduced.