This hammer mill is newly developed machine which is endowed with many advantages compared to other kind of crushers such as simple construction, convenient operation, high efficiency, saving power consumption, and safe condition. It is suitable to crush raw and hard materials with big size such as tree branches, bamboo, wood scrap, wood brick,old cardboard and newspaper, straw, crop stalks and corn cobs and so on. After crushing, raw materials are uniform and with proper moisture content to meet further processing. With capacity 100-500 kg/h, it is can surely meet the production requirement in the farms, middle sized feeding factory or family.