Field experiments were conducted to investigate the effects of different NPK ratio on yield and NPK uptake of xiangzayou 763.The results showed that with the higher nitrogen ratio or higher phosphorus ratio treatments got a higher rapeseed yield while the proportion of potassium application had no regular consensus under the same amount of other fertilizers. The accumulate amount of NPK in plant were respectively increased as the proportion of nitrogen and phosphorus fertilizer increased ,while the accumulation of K did not performanced as that; The tendency of NPK fertilizer utilization rates were all decreased with the increasing usage of the same kind of fertilizer, the sharpest decline appeared in the utilization of potassium, the smallest reduction appeared in nitrogen utilization. Among the twelve kind of tested NPK ratio, the highest rapeseed yield appeared in the proportion of N: P2O5: K2O = 1:0.5:0.58, which reached 1830 kg/hm2, followed by the N: P2O5: K2O = 1:0.5:0.88, which reached 1800 kg/hm2, the lowest rapeseed yield appeared in N: P2O5: K2O = 1:0.4:1.4, which only got 1350 kg/hm2.