Finance is the financing of currency, which is a general term for currency circulation, credit activities and related economic behaviors. Including currency issuance and withdrawal, bank deposits and loans, issuance and circulation of securities, foreign exchange trading, insurance and trust, domestic and international currency payment and settlement, etc.

Finance involves financial subjects, financial objects and their relationships. Financial subjects are people and units involved in financial activities, including investors and financiers; financial objects are the financial products that people participate in transactions, including stocks, bonds, futures options, etc. Financial relationships refer to who is qualified to issue stocks and other securities, and who is qualified to purchase corresponding financial products.