Abstract: Carbon peak & carbon neutralization have aroused great attention to environmental protection since they were for the first time written into the government work report in 2021. As one of the most important new energy carriers, the lithium-ion battery has become an effective strategy to realize carbon peak & carbon neutralization. This paper selects the list of laboratories recognized by China National Accreditation Service(CNAS) for conformity assessment from internal laboratory of lithium battery industry, and analyzes the factors such as the number of recognized projects, recognition time and the location of recognized laboratories, It will provide reference for the subsequent CNAS accreditation of internal laboratories of lithium-ion battery related enterprises, so that the laboratory can find a balance between cost and income.