The invention discloses a process for treating restaurant-kitchen garbage by utilizing Hermitia illucens, which comprises the following steps of: carrying out solid-liquid separation on restaurant-kitchen garbage, wherein, the water content is 65-85%; crushing the restaurant-kitchen garbage into grains with the grain diameter of 2-50mm; adding auxiliary materials in the restaurant-kitchen garbageto form a treating material, wherein, the mass ratio of the restaurant-kitchen garbage to the auxiliary materials is 1: (0.25-1); adding 5,000,000-12,000,000 Hermitia illucens larvas which are 3-6 days old in per ton of processing material to form a mixture, wherein, the auxiliary materials are vegetable fiber auxiliary materials; adding the mixture into a barrel of a drum-type Hermitia illucens bioprocessor; leading the temperature of the mixture in the barrel to be 32-42 DEG C, and the relative humidity to be 35-75%; unloading after 3-5 days; sieving to separate the Hermitia illucens larvasand the treating remnants; and drying and smashing the treating remnants to be used as a feed. In the process provided by the invention, the treating period is controlled within 72 hours on the ideal condition, thus the restaurant-kitchen garbage can be transformed into a finished product of the feed, thus providing good guarantee for the continuous operations of restaurant-kitchen garbage treatment plants; and the space and resources are saved for the smaller inventory, and the potential pollution risks are avoided.