Abstract: With the continuous improvement of people's living standards， the amount of kitchen waste was increasing year by year， and the problem of disposal of kitchen waste was becoming more and more serious. The use of mechanical pretreatment + anaerobic digestion to treat kitchen waste was the primary process of many large-scale kitchen waste treatment plants， but about 7%～15% of organic residues were still produced after three-phase separation pretreatment. How to further utilize resources remained to be studied. The comprehensive disposal project of kitchen waste in Changzhou was taken as an example. Through the comparative studied of anaerobic digestion and insect feeding of organic residues， the appropriate and economic treatment of organic residues was discussed. The research results showed that compared with anaerobic digestion， the economic benefit of insect feeding was doubled， and it was a relatively economical way of recycling organic residues of kitchen waste.

Key words: kitchen waste, organic residues, anaerobic digestion, insect feeding