Private non-enterprises rely on donations, service charges, business operations, asset operations and other ways to survive. The specific method is as follows:

1. Donation and sponsorship: Private non-enterprise units can obtain funds by collecting donations and sponsorship from the society, which can come from enterprises, individuals, governments and other aspects.

2. Service charges: Some private non-enterprise units provide some specific services, such as medical care, education, training, etc., and can obtain economic resources by charging users a certain service fee.

3. Commercialization: Some private non-enterprise units can commercialize their own public welfare projects, such as selling their own public welfare products and providing public welfare services, so as to obtain certain economic benefits.

4. Asset operation: Some private non-enterprise units have certain assets, such as real estate and stocks, and can obtain certain economic benefits by operating these assets.

5. Private non-enterprise units refer to social organizations engaged in non-profit social service activities organized by enterprises, institutions, social organizations, other social forces and individual citizens using non-state-owned assets. The establishment of private non-enterprise units shall be subject to the examination and approval of their competent business units, and shall be registered in accordance with the Provisional Regulations on the Administration of Registration of Private Non-enterprise Units.