The hybridization matching technique of green case egg breeded by the duck, is a breeding seed selection technique of poultry high quality species. The species is the high oil duck, people centralize the individual and do group feeding to
breed. Detect the genetype of the male duck in the group, the determination is letting the male duck and the female duck which
breed white case egg cross, if the descendants all
breed green case eggs, the male duck is the green case
gene homozygous type; if the descendants breed green and white case eggs, the male duck is the
gene heterozygous type; If the descendants all breed white case eggs, the male duck is the white case
gene homozygous type. Select the green case gene homozygous male ducks to match with the female ducks which breed green case eggs, we will get the green case homozygous group. Take it as the paternal after the selection of performance, then match with other groups, the descendants will all be the ducks that breed green case eggs. The invention adopts quality description genetic principle to improve the breed and quality of the duck, it is simple, scientific, advanced, and with great spread application value.