The city's driving force of science and technology is the comprehensive driving factor of scientific and technological progress, and is the reason of the difference of regional science and technology. Based on the theory of innovation motivation, the paper selects 18 evaluation indexes from five aspects i.e., human support, material support, innovation preferences, demand pull and science and technology service, and uses the data from 2003 to 2012 of 11 cities in Zhejiang to analyze the dynamic change rules of the urban driving force of science and technology by means of weighting method with timing global factor analysis. The 11 cities are divided into three levels by system clustering method and three gradients by gradient analysis. The reasons of time-spacial differentiation of the city's driving force of science and technology are shown through variation analysis as innovation preferences and science and technology services.

city's driving force of science and technology  /  timing global factor analysis  /  spacial differentiation  /  Zhejiang