This book includes the following aspects, preface, insect external morphology, insect internal anatomy and physiology, insect biology, insect taxonomy, insect ecology, entomology experiments, a total of seven parts and 28 chapters, attached 12 experiments. In the theoretical teaching part, it relates insect diversity, insect and human relations, insect morphology and biological function,the growth, development, metamorphosis, reproduction of insect, insect classification principles and methods, insect ecology. The experiments cover insects morphological characteristics, insect physiology and insect biology.