Abstract: The aim of this paper is to obtain excellent castor varieties for production or materials for breeding.According to the agronomic traits of phenophase, resistance, plant height, the number of effective spikes per plant, the number of effective spike capsules per plant,100-kernel weight,productivity per plant and yield per mu,the comparative analysis was carried out between of expression of 21 present primary castor cultivars and the contral varieties of Yunbi NO.2 in Yunnan. The principal component analysis and cluster analysis were done on the basis of genetic correlation of six agronomic traits. The results indicated that the phenophase of Yunbima NO.5, Yunbima NO.4,Tong castor 8,Zi castor 9, Tong castor 6, Fen castor 10 was between 124-153d,similar to the contrasts.However,the yield per mu was between 176.30-262.29 kg/hm₂,being significantly higher than the contral varieties. By the correlation analysis of 11 agronomic characters,the results showed that the largest contributor to the production of castor plant agronomic traits were the plant height and 100-kernel weight,productivity per plant.The cluster analysis indicated that 21 castor cultivars were clustered into three categories. These varieties could be used for castor breeding with different purposes. Preliminary result showed that Yunbima NO.5, Yunbima NO.4,Tong castor 8,Zi castor 9, Tong castor 6 have good agronomic traits and adaptability,it is promising to use them for production directly or as materials for breeding new varieties.