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The invention provides a breeding method for a purple Chinese cabbage. The breeding method for the purple Chinese cabbage comprises the steps that a, a purple selfing line variety is breeded, i.e., a purple Chinese cabbage flower stalk selfing line serves as a female parent, a green Chinese cabbage selfing line serves as a male parent, and crossbreeding is conducted to obtain a purple cross breed; and the purple cross breed serves as a female parent, a green Chinese cabbage selfing line serves as a backcross male parent, back cross breeding is continuously conducted, and a plant with the first target trait stable is selected as the purple selfing line variety I; b, a purple non-heading pakchoi selfing line variety is breeded, i.e., a purple cabbage selfing line serves as a female parent, a non-heading pakchoi selfing line serves as a male parent, back cross breeding is continuously conducted, and a plant with the second target trait stable is selected as the purple selfing line variety II; and c, a purple Chinese cabbage variety is breeded, i.e., the purple selfing line variety I serves as a female parent, the purple selfing line variety II serves as a male parent, and crossbreeding is conducted to obtain the purple selfing line variety. The purple Chinese cabbage is short in growth period, long in shelf life, high in heat resistance, good in quality and high in yield.