Abstract:Lithium is the key metal to support the sustainable development of new energy industry. It is of great significance to realize the green recycling of characteristic lithium resources to ensure the safe supply of lithium resources in China. China "s lithium resources are characterized by low overall grade of primary lithium resources, difficulty in efficient and clean utilization, low utilization efficiency of recycled lithium resources, and large demand for high-value recycling. Based on the characteristics of China "s resources and industry, this paper systematically introduces the progress of comprehensive utilization technology of characteristic lithium resources such as salt lake lithium, ore lithium and recycled lithium, and focuses on the analysis of salt lake brine extraction and adsorption lithium extraction technology, spodumene, lepidolite, clay-type lithium ore smelting lithium extraction technology, waste lithium ion battery recycling technology and other lithium-containing waste lithium extraction technology. The current situation and development trend of lithium extraction technology are further proposed from the technical, industrial and policy levels. Suggestions on the construction of green recycling system of characteristic lithium resources in China are put forward in order to provide reference for the high-quality sustainable green development of lithium industry.