Housing accumulation fund refers to a specific public fund set up by the government to help employees buy, build, maintain and decorate their own houses. It is a compulsory savings system, and both employers and employees need to pay according to a certain proportion. The main purpose of housing provident fund is to provide loans and withdraw funds for buying houses or repaying housing loans. Provident fund is a broader concept, which can include all kinds of public funds and has more diversified uses. Provident fund can be a form of savings voluntarily paid by individuals or organizations, which can be used for personal emergency reserve fund, education fund, pension, etc. The specific use and management of provident fund can be different according to different countries or regions.