Chaochan 2 is a rice variety of high yield and high quality.Through regression analysis of two years data between different fertilizer sorts and quantities,different density of trans-plants and yields.Its mean yield was 8797.8kg /hm², from yield equation.The Cultivation factors affected the yield of Chaochan 2 were as follows.The primary factor was application quantity of phosphoric fertilizer,113.4～129.1kg /hm²; the secondary factor was application quantity of nitrogenous fertilizer,139.2～143.4kg /hm²; the third factor was application quantity of potassium fertilizer,67.1～84.3kg /hm². When the density of transplants was 30cm×13.8cm,the yield was the highest.In addition,the results of the individual factor effect analysis showed that the relation between yield and each of the four individual factors was quadratic curve.