1. Investment mode of capital increase and share expansion: Capital increase and share expansion refers to a financing enterprise adding a part of its share capital on the basis of its existing capital, and selling this part of the newly added share capital to private equity investment funds, so as to achieve the purpose of fund funds entering the financing enterprise and holding shares.

2. Equity transfer investment method: Equity transfer investment refers to the company shareholders of financing enterprises transferring their own shares to private equity funds according to the agreed proportion, so that private equity funds become the company shareholders of financing enterprises.

3. Other investment methods: Private equity investment funds can also combine the above two investment methods, combine them with creditor's rights investment, and invest in the form of establishing target enterprises in kind and cash.