Diapause is one of the most important behaviors for many insects involved to avoid the adverse conditions,such as the seasonal presence of energy resources,mates,and favorable physical conditions.Insects have the capacity to determine whether they enter diapause by monitoring changes in environment and internal conditions through the mediation of endocrinological mechanisms.The recent research progress on the insect diapause was reviewed in this paper.The relationship between insect diapause and environment factors,the changes of physiology and biochemistry during diapause and the diapause mechanism regulated by endocrinology system were introduced.