Abstract: The problems of existing source prevention systems, such as EIA and three simultaneities, have become increasingly prominent. It is difficult to adapt to the current environmental management needs, and thus the establishment of the environmental access system should help to further improve the system of the source system prevention. The environmental access is in essence a kind of government regulation, and a series of restrictions, constraints and norms based on the regional environmental capacity and carrying capacity of resources. The subject of environmental access is the government, while the object of it is the enterprise. In order to further clarify the corporate property, the environmental access can also be referred to as the industrial environmental access, and the industrial environment access program is the specific means of implementing access management. In accordance with the direction of the access requirement, the industrial environmental access program is divided into five major aspects, namely policy access, space access, total amount access, industrial form access and technology access. At the end, Changzhou City in Jiangsu Province was selected for case study, and the industrial environment access program obtained for the city.