Longkou Sub-branch of China Construction Bank is located in Zhenxing Road, Longkou City. Longkou Sub-branch of China Postal Savings Bank is located in Huangcheng South Street. China Industrial and Commercial Bank Longkou Sub-branch is located in Zhenxing Middle Road, Longkou City.

Banks are legally established financial institutions engaged in money and credit business. It is the product of the development of commodity currency economy to a certain stage. Banks are divided into central banks, policy banks, commercial banks, investment banks and the World Bank, and their responsibilities are different.