In the past forty years,the rapid increasing of nitrogen fertilizer consumption and the decrease of nitrogen use efficiencies(NUE)in China have attracted the worldwide attention.The basic data and researches on the nitrogen fertilizer input and NUE in different crops are still quite limited in China.In this paper,data were collected through farmer survey and data mining were used to evaluate nitrogen fertilizer input status,grain yields and nitrogen partial factor productivity(PFPN)of crops nationwide in the past forty years,especially during the last decade.The results showed that the average nitrogen fertilizer input,yield and PFPN of grain crops,vegetables and fruits were all increased from 2008 to 2009,compared to the averages from 2000 to 2003.For example,the N applied rates in grain crops,vegetables and fruits were increased by 26,36,107 kg/hm2 respectively,the corresponding yield increases were 1 280,5 722,18 802 kg/hm2 respectively,leading to the values increase of PFPN of 2.2,6.6,25.2 kg/hm2 respectively.Compared to the averages from 2000 to 2003,the values of PFPN of grain crops were increased significantly in the main grain production regions from 2008 to 2009,such as in the Northeast China,North China Plain and Yangtze River Region,not in the other regions including the Northwest China,Southwest China and South China.The main reason for the PFPN increases in grain crops was the increased grain yields,not the reduce of nitrogen fertilizer comsumption.For grain crops,maintaining the presesnt N rate and increasing production are essential for improving NUE.The great potential to reduce nitrogen fertilizer input was in vegetables and fruits.