Anti-poverty is not only the focus in the history of professional social work, but also the focus of contemporary social service work. In the process of winning the battle against poverty, professional social work has updated the value concept and service mode of poverty alleviation, promoted the construction of poverty alleviation social policy and talent team. However, with the promotion of precise poverty alleviation, the localization, diversification, institutionalization, specialization and theorization of anti-poverty social work need to be improved. The key is that the core competence of social workers in poverty alleviation is weak. Therefore, the construction of accurate poverty social workers' core competence system need to have "value-knowledge-technology trinity" as the basis, and three levels as corecomponents:1)value concepts of common prosperity, urban and rural equality, endogenous development; 2)knowledge dimensions of social policy, livelihood development, service management; 3)practical and technical aspects of accurate identification, cross-border integration, coordination integration and assessment follow-up. In addition, professional education, continuing education, practice development and policy guidance should be carried out to develop, promote, expand and consolidate their core competence.