Male silkworm moth oil is a class of biologically active substances extracted from male silkworm moth,which has a high medicinal value with rich linoleic acid,linolenic acid,steroid and steroid hormones.The moth oil content of different male silkworm varieties were compared in this paper.And two pairs of male silkworm varieties HuaJing × Pinghao,HuaJing × Ping28were selected out with high moth oil content(above 50%),high values of cocoon shell rate and cocoon shell yield per 10000 larvae,which provide the r...