The test of resistance difference of Chinese cabbage varieties against clubroot was carried out inoculated with different concentrations of spores by soil spores mixed method.The varieties of Chinese cabbage were Chinese cabbage 83-1, Zhonggan 11, The Midu green bar vegetables and Huayou 6 and the inoculation of spore concentration were 1 x 104 spores/g, 105 spores/g, 106 spores/g, 107 spores/g,10s spores/g, 109 spores/g.The results showed that the average incidence rate were 7.2% , 11.2%,28.9%, 59.8%, 83.1%, 88.2% and the average disease index were 11.2, 13.4, 25.9, 34.2,46.1, 49.5, respectively.The resistance of 4 Chinese cabbage varieties against clubroot with different spore concentration was that all cultivars showed resistance to P.brassicae with the inoculation of 1 × 104 spores/g.Chinese cabbage 83-1 showed moderate resistance and other varieties showed resistance to P.brassicae with the inoculation of 1 × 105 spores/g.All cultivars showed moderate resistance to P.brassicae with the inoculation of 1 × 106 spores/g.All cultivars were moderate susceptible to P.brassicae with the inoculation of 1 × 107 spores/g.Chinese cabbage 83-1 was susceptible and other varieties were moderate susceptible to P.brassicae with the inoculation of 1 × 108 spores/g.All cultivars were susceptible to P.brassicae with the inoculation of 1 × 109 spores/g.The average disease index of the 4 Chinese cabbage varieties in descending order as follows: Chinese cabbage 83-1 > Zhonggan 11 > Midu green bar vegetables > Huayou 6.