Abstract: With the high attention paid by the supreme authority to the positive role of professional social work in social governance and the promotion of the strategy of mutual recognition of professional qualifications in the field of social work among Guangdong, Hong Kong and Macao, the legislation of social work market has become increasingly urgent. At present, there are three kinds of legal modes in social work market, i.e. laissez-faire access, permissive access and incentive access. The incentive access mode, which combines the advantages of permissive access mode and laissez-faire access mode, is created by China. The incentive access mode has divided social work market into professional social work market and general social work market, leading to a dual market structure. In the future, Dual Law Adjusting Structure can be adopted to formulate the Registered Social Worker Act, establish the legal systems of International Social Work Education Project Authentication, Social Worker Professional Level Authentication, Practice Registration and so on, adjust the professional social work market with the Registered Social Worker Act while the general social work market will be regulated by the common rule of law of the market prevailing in all kinds of markets.

Key words: permission access mode, incentive access mode, social work market, dual market structure, dual law adjusting structure