Three financing methods: equity financing: equity financing of securities companies mainly refers to raising capital when securities companies are established or increase capital and expand shares, securities companies publicly issue shares and go public, and securities companies use equity financing in the course of operation. Debt financing: bond issuance financing is a financing method in which a securities company, as a debtor, promises to repay the principal and interest and issue securities in a certain period of time in the future. Bill financing: Bill financing is the oldest financing method in the money market. Commercial paper is a short-term promissory note with a specific term, which is only sold to institutional investors and can be used in the market.