红点瓢虫为中国东北林区杨树蚧壳虫的主要控制天敌，具有可用的经济价值，前人对其生活史已有所研究，而对其生命过程致死因子的研究还是空白，在前人研究的基础上，经现场观察，红点唇瓢虫越冬后的成瓢平均寿命为７２ｄ。当日平均温度在１９．５９～２２．６２℃时，幼瓢历期为２１ｄ；幼瓢被瓢虫隐尾跳小蜂寄生是导致红点唇瓢虫死亡的主要因子 Red spot ladybird is the main control natural enemies of poplar scale insects in the northeastern China forest area, and has available economic value. However, previous studies on their life history have been carried out. However, the study on life process lethal factor is still blank. On the basis of the observation by the scene, the red dot lip ladybug into the ladle after the average life expectancy of 72d. The average daily temperature of 19.59 ~ 22.62 ℃, the ladle lasted 21 days; young ladle was ladybug beetles concealed tail bee parasitic is the main factor leading to the death of red dot lip ladybug