Insure subsidized (also called traditional internal) endowment insurance, compulsory storage endowment insurance (also called provident fund model) and national overall endowment insurance.

At present, there are three countries that implement the old-age insurance system in the world, namely, insurance-funded (also known as traditional internal) old-age insurance, compulsory storage and storage old-age insurance (also known as provident fund model) and national overall old-age insurance.

Endowment insurance is an important part of social security system and one of the five most important social insurances.