落叶松毛虫是新疆阿尔泰山区森林里多发生的、危害较严重的主要森林害虫之一。对落叶松毛虫的形态特征、危害和发生规律进行介绍,并有针对性地提出了防治措施。 Dendrolimus caterpillar is one of the major forest pests that occur more frequently in the forests of Altai mountains in Xinjiang. Morphological characteristics, hazards and occurrence rules of the pine caterpillar were introduced, and some preventive measures were put forward.