Aiming at the problem of vapor recovery and treatment of large terminals with multiple liquid bulk products，large flow rate，and high emission standard，combining with the 40 million t/a refining integrated project （phase I） oil and liquid chemical jetty design of Zhejiang Petroleum Chemical Co.，Ltd.，we analyze the principle，characteristic and applicable products of each vapor recovery process，summarize the combined process flow of vapor recovery and treatment，and draw the conclusion that under the requirements of high emission standard，the catalytic oxidation process should be added to the vapor recovery treatment process to ensure that the exhaust gas meets the emission standard. Separate pretreatment of vapor should be based on various factors such as melting point，vapor partial pressure，polymerization，and treatment capacity.