The utility model discloses an anaerobic dry type methane fermentation device for silkworm excrements, and aims at providing a harmless fermentation processor dedicated for sericiculture peasant households, wherein the structure of the harmless fermentation processor is closed, the diffusion and the propagation of pathogenic fungus can be prevented, the structure is simple, the cultivation environment of a silkworm area can be improved, and pathogen transmission and odor pollution of excrements can be solved. The anaerobic dry type methane fermentation device comprises a feeding system, a discharging system and a fermentation chamber. The feeding system comprises a feed pipe and a movable cover board; the discharging system comprises a discharge pipe and a discharging valve; the feed pipe is welded with a tank body in a sealing manner; the height of the feed pipe is less than the radius of the tank body; therefore, a methane fermentation tank can carry out dry type fermentation. The silkworm excrements account for about 20 to 40 percent of the weight when materials are fed through the feed pipe, and diluting water with the weight of 60 to 80 percent needs to be added at the same time, so that the effectiveness of the dry type methane fermentation is ensured. The valve is opened after the fermentation is finished, and biogas manure and treated water are dumped through a discharge port.