Biodegradation accelerator for biodegradable resin

A biodegradable resin composition comprising a biodegradation accelerator for a biodegradable resin and a biodegradable resin,

• the biodegradation accelerator comprising a regenerated cellulose, wherein
• the regenerated cellulose is selected from the group consisting of fibers, molded products including films, powders, cotton-like objects, and intermediate molded bodies,
• a biodegradation speed for a biodegradable resin is accelerated compared to a case where the biodegradation accelerator for a biodegradable resin is not used, and
• a content proportion of the biodegradation accelerator for a biodegradable resin is from 0.1 to 50 mass % in terms of a regenerated cellulose in the biodegradable resin composition.