Abstract: The special intestinal structure of insects provides a habitat for microbial communities,and the stability and diversity of these intestinal microbes enable the host to perform normal physiological functions. In recent years,molecular biology,metagenomics,bioinformatics and other technologies have overcome the defects of traditional isolation and culture methods and become the main methods for in-depth study of insect intestinal flora. In this paper,the functions and detection
methods of insect intestinal microflora were reviewed in order to provide reference and ideas for the study of insect intestinal
microflora and the management of harmful insects.

Key words: Insect, Intestinal flora, Function, Detection method