Based on the analysis of related concepts of industrial belt researched at home and abroad, we find that more and more attention is paid to the construction and the development of industrial belt, which has become a non-equilibrium growth path for rapid growth of regional economic and global economy, and is playing an important role in industrial distribution guidance, regional development and some other aspects. The construction of industrial belt has gradually become a significant organizational form of traditional industries and modern manufacturing which are stepping into intention, specialization and an important power of promoting the regional economic leapfrog development. On the basis of related research of construction of the industrial belts, we review the process and analyse the regional effects on industrial belt. And then we come to a conclusion on the major impetus of the development of industrial belt. A comprehension evaluation index system describing the impetus has also been made. By using the method of entropy, we compare the dynamic evolution of formation and development of industrial belt in Jiangsu province in a quantitative way. The result shows that through the layout and development of the industrial belts in Jiangsu, the trend of widening regional differences in northern and southern Jiangsu has been effectively suppressed. At the same time, with the promotion of the economic status of industrial belts in this province, the intensity of economic interaction between countries and cities of industrial belt has also been enhanced. The impetus of formation and development of industrial belts is changing, which is gradually shifting from singleness to multi-element. That is to says the major impetus is transforming from resource development to infrastructure guidance. Finally it forms multiple elements situation, whose driving force comes from the central cities, outgoing expanding and technology push.