Effects of different nitrogen amount on physiological characteristics and yields of rotation and continuous cropping were studied using red chilli"Bei Jing Hong"as experimental materials.The results showed that applying nitrogen could significantly increase photosynthetic rate,transpiration rate and stomatal conductance.The increasing range of high nitrogen treatment was the biggest.The three indexes of rotation were all higher than those of continuous cropping under the same nitrogen applying amount,however,the difference between rotation and continuous cropping was not significant.Effective yield improved with the increasing of nitrogen applying amount and the differences between rotation and continuous cropping of middle nitrogen treatment and low nitrogen treatment reached extreme significant level and significant level,respectively.However,the difference between rotation and continuous cropping of high nitrogen treatment was not obvious.Therefore,increasing nitrogen applying amount was the effective way to improve red chilli continuous cropping capacity.