Oil (gas) fields are often accompanied by oil (gas) field water, which usually hashigh lithium concentration than some other waters in natural environment, and some of them even can reach lithium industrial grades. Chinese oil (gas) field has large water reserves and lithium resources. However, it has been neglected for a long time. Under the background of a series of breakthroughs were made in extracting lithium from salt lake brine, the proportion of brinetype lithium resources has increased year by year. Lithium resources in oil(gas) field water should also be taken into account seriously. Lithium concentration and distribution characteristics of oil (gas) fields water and summarizes the current status of water extraction technology in the main domestic and foreign oil (gas) fields were summarized in this study to providing advices for the comprehensive utilization of oil (gas) fields water in China.