Abstract: In order to solve the problem of the reasonable amount of N, P and K in winter rapeseed along the Yangtze River in Jiangsu Province,based on N, P and K fertilizers with different dose in 2012-2015 years of Jiangdu district in Yangzhou City, the study was conducted about the fertilization index system of winter rapeseed by using the fertilizer effect function model. The results showed that the rational N, P and K fertilizers could increase the growth of rapeseed, and increase obviously yield of rapeseed. Using Single-factor and linear plus platform model, the optical recommendation of N fertilizers were 277-308 kg/hm2, with average 292.5 kg/hm2, and the optical recommendation of P, K fertilizers were 70 kg/hm2, 98 kg/hm2, respectively. These were improvement for fertilization index system for rapeseed in the area along the Yangtze River in Jiangsu province.