The normative definition of fixed-term investment is a fund investment mode in which an investor applies through a designated fund sales organization, agrees in advance on the deduction date, deduction amount, deduction method and the name of the invested fund, and the sales organization automatically completes the deduction and subscription in the bank account designated by the investor on the agreed deduction date. Regularly invest in funds or other investment targets in a fixed way. Fixed investment is suitable for working-class people to conduct long-term financial management.