The general life cycle assessment（LCA） method simplifies the environmental impact to a continent or even the whole world

but ignores the location of the emission and the local environmental conditions of the emission

which may lead to significant misstatement of the environmental impact. At the same time

due to the difference in production process

the same substance in the same unit

the possible environmental impact of production in different areas of the type and degree are also very different. In order to solve the influence of geographical variability on the results of LCA

researchers introduced the method of regional life cycle assessment to obtain more accurate assessment results through regionalization and spatialization to support the formulation of environmental policies and the selection of environmental governance means. This paper systematically introduces the development process

principles and implementation methods of the regional life cycle assessment

recommends the acquisition channels of some regional background data

and introduces some research cases using the regional life cycle assessment

so as to verify that regionalization is conducive to improving the robustness of impact assessment results. Therefore

regional life cycle assessment can make up for the lack of spatial information in general life cycle assessment and make the results of environmental impact assessment more accurate.