none Enter noneEmail20150307 (luziyun2011@163.com) The mass rearing facilities, procedure, technical points, artificial diet formula and required environmental conditions of armyworm, Mythimna separata Walker, were introduced systematically in this paper. M. separata was used as an alternative host to mass rearing Microplitis tuberculifer (Wesmael) in laboratory. Microplitis tuberculifer has good potential for biological control of Mythimna separata and Spodoptera exigua if mass rearing for augmentative release were possible.