Using 20 germplasm resources of different leaf ball types of Chinese cabbage as materials,carried on RAPD analysis by using two random primers. The result indicated that there were obvious pleiomorphism difference among 11 varities. Repeat type among Chinese cabbage varities had similar coefficient bettwen 2.6458~3.2395, mean is 2.9426; twist type among Chinese cabbage varities had similar coefficient bettwen 1.7321~4.9308, mean is 3.0204; Close type among Chinese cabbage varities had similar coefficien...