Abstract: To study the biological characteristics of Pineus armandicola, and to improve forecast technology, the morphological characteristics and life history and population changes of P.armandiola were recorded by combining indoor feeding with observation in forests, and the developmental periods were compared for different insect states at 20℃、25℃、30℃ and 35℃.The results showed that P.armandicola bred eleven generations in one year in Daqingliangzi area. On average, it would spend thirty days per generation in spring and summer, and thirty-five days per generation in autumn and winter,with overlapping generations. At 35℃, the developmental period of each insect state was significantly lower than that at the other 3 temperatures (P<0.05); In summer(from June to August), the number of eggs, nymphs, and wingless aphids was significantly higher than those in the other three seasons (P<0.05). The spawning period of P.armandicola was closely related to the phenologies of Rosa mairei,Alnus cremastogyne and Fagopyrum esculentum.