In fact, there is also the Bank of China, and the four major commercial banks of Workers, Peasants and China Construction are all separated from the People's Bank. Under the planned economy, China has only the People's Bank, which not only performs the function of financial management, but also performs the specific function of dealing with people's karma. Reform and development, in order to adapt to the form of national economic development, the state has separated the four major state-owned banks from the enterprises built by workers and peasants. There was some division of labor at the earliest. ICBC mainly handles industrial and commercial enterprise customers, Agricultural Bank of China is an agricultural enterprise and individual customer, China Construction Bank is a construction unit enterprise, and Bank of China is an import and export enterprise.

However, with the advancement of financial reform, this boundary has been broken, and there is no difference between banks, especially among grassroots banks. Later, the state established policy banks (Agricultural Development Bank, etc.). , but now it is also developing to commercial banks) and allowing the establishment of joint-stock banks. Later, all four banks went public and became real commercial banks.

At present, the largest and most profitable of the four banks is ICBC.