Provided in the present application is a method for breeding crucifer vegetable varieties by the double haploid inducing line of rape, comprising the following steps: 1) collecting resources of crucifer vegetables, identifying and classifying same, and regulating the sowing time of the inducing line to ensure that florescences meet； 2) pollinating crucifer vegetables with the inducing line； 3) bagged selfing or forced selfing by peeling buds during the bud stage； 4) identifying stability of strains； 5) testcrossing stable strains and sterile lines； 6) investigating the sterile degree of testcross progenies to breed excellent maintainer lines； 7) pollinating sterile strains of testcross progenies with the inducing line； 8) investigating the fertility of induced progenies, and continuing to pollinate sterile individuals with the inducing line to breed new sterile lines； 9) test matching sterile lines and maintainer lines to breed a new combination of hybrids.
