The present paper reports the result on studies of development stages and morpha of Lysiphlebus testaceipes Cresson, a parasite of green peach aphid. Conducted a field survey of natural populations, and to observe the development in the interior of the morphological characteristics. Its form, size of this aphidiid from egg to adult were described and measured in detail. Under the laboratory condition of constant temperature 25[degree]C, photoperiod 16 h per day, relative humidity 60% [long dash] 70%, the development periods of egg stage, Larval stage and pupal stage ( and pre [long dash] pupal stage) were 1 [long dash] 2, 5 -7, 4 [long dash] 5 days, respectively. The developing periods of 1, 2, 3, 4 instar larvae were 48 [long dash] 60, 24 [long dash] 36, 24 [long dash] 36, 24 [long dash] 36 hours, respectively. Also observed mating and spawning behavior. L. testaceipes were influence on the temperature and nutritional, which under the conditions of 25 [degree]C, add 20% honey can significantly extend longevity. September 15 2011 liuaiping806@sohu.com noneEmail20150313