The fermentation turning machine is suitable for the industrial fermentation treatment of organic solid materials such as animal waste, domestic garbage, sludge, crop straw, etc., and can also be used for feed fermentation. Compared with the walking turner and fermentation method, the organic fertilizer fermentation turning machine has advantages such as high yield, low energy consumption, small land occupation for turning sites, low equipment investment, thorough material turning, significant reduction in moisture content during fermentation, stable equipment operation, low failure rate, and quick formation of fertilizer.