The invention discloses a method for cultivating agaric with mulberry branches. The formula for cultivating agaric with mulberry branches consists of the following raw materials by weight: 80-85 parts of mulberry branch, 1-5 parts of rice bran, 1-5 parts of bran, 1-5 parts of corn meal, 1-5 parts of silkworm excrement, 1-5 parts of gypsum powder, 0.1-1 parts of lime powder, 1-3 parts of sugar, 1-5 parts of cottonseed meal, 1-3 parts of soybean powder and 0.1-1 parts of calcium carbonate. To cultivate agaric with mulberry branches has ample raw material sources, simple technology, low cost and quick effectiveness. Moreover, to cultivate agaric with mulberry branches can solve the contradictions between fungus and forest. To cultivate agaric with mulberry branches instead of forest logs not only has the effect of turning waste into treasure and improving the economic benefit of sericulture production, but also has great significance in the protection of the forest resource.