This course first teaches the biological characteristics of insect growth and development, dormancy and diapause, migration and diffusion, and then discusses the effects of biotic and abiotic factors on insect development and occurrence, and then elaborates the rate of change in the number of insect populations. Including population growth rate, life table production and analysis, mathematical model application for pest occurrence prediction, analysis of population growth and decline factors, as well as population investigation technology and data processing, and finally discuss the methods and examples of pest prediction and prediction.