1. Fund management business: Fund management business refers to the investment and operation of fund assets by fund management companies according to their professional investment knowledge and experience, and is the most basic business of fund management companies. As a fund manager, the most important duty of a fund management company is to organize investment professionals, formulate the portfolio strategy of fund assets, select investment targets and decide the investment opportunity, quantity and price according to the provisions of the fund contract or fund articles of association.

2. Entrusted asset management business: Entrusted asset management business refers to that a fund management company, as an entrusted investment manager, signs an entrusted investment management contract with the client in accordance with relevant laws and regulations and the client's investment wishes, and invests the assets entrusted by the client in the securities market in combination with securities such as stocks and bonds.

3. Fund sales business: Fund sales business refers to the behavior that fund management companies directly sell fund shares to fund investors through their own outlets or electronic trading websites. Fund management companies can directly sell fund shares, or entrust other institutions to sell fund shares.

For fund companies, many external institutions provide research services for them, and many research institutes of securities companies also provide research services, which is equivalent to sellers. For example, the fund company pushed some commissions to pay his expenses.