Aiming at the problem of high nitrogen phosphorus and other nutrients in river of Luanhe river diversion projectin in recent years, based on river water quality monitoring data from 2013 to 2014 duringdiversion period,the paper analyzed the shape characteristics and space distribution feature of nitrogen in river way of Lihe,Guohe and non-diversion river Shahe from the structure and dissolved features.The results show that the main state of nitrogen occurs in the form of dissolved nitrogen,in which the nitrate nitrogen content is the highest;compared to non-diversion river, the water river has high organic nitrogen content. Nitrogen digestion and transformation of the diversion river are significantly weaker than that of non-diversion river in space.