Abstract: In recent years, the transformation and upgrading of industrial ecologization have become a hot issue. This paper builds an evaluation index system of industrial ecologization level, and uses factor analysis method to measure the level of industrial ecologization in China’s each provinces (municipalities and autonomous regions). Then it analyses industrial ecologization level statically and dynamically. Finally, the truncated regression method is used to find out the main factors affecting the level of industrial ecologization in China. The empirical results show that all China’s provinces can be divided into four types based on the different industrial ecologization level , which include leading area, developed area, medium area and backward area. Although the industrial ecologization level of each province has improved, the gap is significant. And the main factors affecting the level of industrial ecologization are per capita GDP, industrial structure, investment in environmental pollution control, R&D expenditure, industrial solid waste production, and comprehensive utilization of industrial solid waste. Finally, the policy recommendations for accelerating the transformation and upgrading of industrial ecologization are proposed from the internal and external aspects of the industrial system.