Abstract: 【Objective】For the purpose of making use of new resistant material of rapeseed (Brassica.napus) to S.sclerotiorum, the resistant difference of rapeseeds were studied in this experiment;【Method】The 14 different types of rapeseeds were used to study theirs resistance to S.sclerotiorum in the disease nursery and farmer field by artificial inoculation and natural infection.【Results and Conclusion】The results suggested the resistance of rapeseeds were significant different among populations. The resistant index of Wanyou14 was 0.36 (the Control, Zhongyou821, was 0), and it was the best line in 14 rapeseeds in disease nursery. Ranger, resistant index 0.64, was most tolerant to disease development in all inoculated lines. Middle-maturing types and late-maturing types had better resistance than early-maturing types. The resistance to S.sclerotiorum of winter rapeseeds was better than spring rapeseeds. The spring rapeseeds were useful tolerant materials in breeding of winter rapeseeds. The lines of mid-late maturity were favorable to control disease damage.