The waste fungus chaff emerged in the process of black fungus production was used as material for manufacturing organic manure. Self-made fermentation agent was added and the fermentation process was optimized.And its fertilizer efficiency was studied. The results showed that the time of fermentation temperature being more than 55℃ was 14 days. C/N, T, GI was 24, 0.37, 87.2%, respectively, which reached the standard of complete compost. The new manufacturing organic fertilizer from black fungus chaff improved the root length and activity of Chinese cabbage. Its output was increased by 24.37% compared with the same amount of chemical inorganic fertilizer treatment. Meanwhile the soil was maintained at a high fertility level. Compared with the soil before planting, the content of alkali-hydrolyzable nitrogen, available phosphorus and organic matter had been greatly improved. Using black fungus chaff to manufacture organic manure in this method can realize the effective reuse of resources, which is worth further widespread in the future.