This document stipulates the terms and definitions, classification and models, system composition, usage conditions, and requirements of compost mixers. It also specifies its test methods, inspection rules, markings, packaging, transportation, and storage. This document is applicable to the production and inspection of continuous material mixing mixers in the pre-treatment process of sludge, feces (dung residue) solid waste composting. Other organic solid waste composting mixers can refer to this document.