Key Words：exogenous genes insertion, defence system of plant itself, morhological resistance, biochemical resistance, induced resistance, interaction

Abstract：        The introduction of exogenous genes will cause physiological and metabolic changes and affect the defense system of plants against insect pests. This paper reviews the influence of exogenous genes on external morphological structure, internal biochemical resistance and induced resistance after introduction. It provides a basis for combining exogenous and endogenous plant pest resistance systems and research on the use of transgenic plants in the future.