[Purpose/significance] Through the evaluation of the level of open and utilization of government environmental data in key areas of ecological governance, it is possible to discover the influencing factors that affect the level of open and utilization, which will help local governments to improve the level of open and utilization of data platforms and serve the practice of ecological environmental governance better. [Method/process] Based on the value co-creation theory and the DPSIR model, an evaluation index system for the open and utilization level of environmental data was constructed from the five dimensions of driving force, pressure, status, influence and response, and then the key areas of national ecological governance with typical cross-regional characteristics such as Beijing-Tianjin-Hebei, Yangtze River Delta, Pearl River Delta and Fenwei Plain, which was taken as as an example to evaluate the level of open and utilization of regional environmental data. [Result/conclusion] The research found the following conclusions:①There are obvious differences in the level of open and utilization of environmental data in the four regions, followed by the Yangtze River Delta, Pearl River Delta, Beijing-Tianjin-Hebei and Fenwei Plain. ②The amount of environmental data downloads, regional economic support, the number of functional modules used on the platform, the number of data security issues, and the number of security inspections and evaluations are the important factors that determine the level of open and utilization of regional environmental data. ③The Yangtze River Delta has the highest level of open and utilization of environmental data, mainly due to its outstanding performance in key indicators such as the number of platform functional modules and environmental data downloads. Although the Pearl River Delta has a comprehensive platform layout, it does not perform well in terms of environmental data downloads. Insufficient layout of data open platform and capital investment in Hebei Province restricts the overall level of open and utilization of environmental data in the Beijing-Tianjin-Hebei region. The low level of open and utilization of environmental data in the Fenwei Plain is affected by multiple factors such as platform construction, openness, and environmental data resource collection. In order to improve the level of open and utilization of government environmental data, governments at all levels should take perfect measures in the following areas, such as platform construction, capital investment, data open standards, data application, risk prevention, etc.