Although the specific design of investor protection funds in different countries (regions) is different, its basic nature is mutual insurance funds in the industry, that is, the sub-investment of securities institutions as members of the fund management organization constitutes the main body of the fund, which is equivalent to allowing all member securities companies to jointly insure and underwrite their customers. Therefore, the contribution of members constitutes the main source of investor protection funds. From the practice of various securities markets, the collection methods of membership fees include initial membership fees, annual fees and temporary supplementary meetings. There are various charging standards, including asset size, number of customers, profit, differential treatment according to business scope, management level of members and risk level modulation. The basic principle is the matching of rights and obligations.