Abstract: The purpose of these experiments was study on Relationship of 8 Agronomic Characters between 15 Spring Rape varieties and their corresponding influence on the yield and providing a theoretical basis for spring rapeseed breeding. The analysis based on coefficient of variation showed that great genetic variation and wide variation range existed among main agronomic characters. The coefficient of variation of total branch number per plant, effective pod number per plant and weight per plant beyond 50%, however, the CV of 1000-grain weight was 8.472%.The correlation analysis showed that 10 pairs of characters had reached significant level and 2 pairs of characters had reached significant negative correlation in 15 Spring Rapeseed varieties. The principal component analysis selected 4 main contents that contributed 85% genetic information. The results showed that effective pod number per plant, weight per plant, lO00-seeds weight was the higher the better; the first effective branch site length of main inflorescence, the first effective branch number was moderate. The clustering analysis showed that 15 spring rapeseed varieties could be classified into three types in the level of 4 and analyzed their variation of main Agronomic characters. At the level of 2 the second type could be classified into four types.