The study area mainly includes part of regions at north Qinling mountain. The paper collected the rainfall run-off data and underlying surface data from five stations for hydrologic regionalization by fuzzy cluster analysis. The five stations are called respectively Laoyukou, Qinduzhen, Dayu, Luolicun and Maduwang. In the light of the area water regime, the five stations are divided three sub-regions.By analyzing and testing the subarea result，it insure rationality of regionalization. Finally, the paper depended on the result of sub-regions to calculate hydrologic feature value so as to solve the shortage of hydrological data in north Qinling mountain.The result can provide a scientific basis for reasonable layout, planning and adjustment of representative hydrologic network in shaanxi area.