The approval of Development Planning of Guanzhong-Tianshui Economic Zone indicates that the development of “Great Guanzhong” has entered a new strategic promotion period.This paper selects indicators of employees in the main export-oriented service departments in cities to measure and analyze urban flow intensity of central cities in urban agglomeration of Guanzhong-Tianshui economic zone according to formula of urban flow inensity.The result shows that Xi’an,the central city with high urban flow intensity,is the agglomeration and radiation center of the economic zone; Tianshui and Xianyang with medium urban flow intensity are the agglomeration and radiation sub-centers of the zone and are central cities in sub-zones; central cities such as Tongchuan,Shangluo,Weinan,Baoji and Yangling with low urban flow intensity are the local agglomeration and radiation centers.Based on the above analysis,this paper puts forward some regional development policies for intensifying urban flow so as to provide scientific references for quickening the planning and development of the urban agglomeration of Guanzhong-Tianshui economic zone.