The fixed-point poverty alleviation by public sectors is the poverty alleviation mode that the public sectors of the Party organs and Governmental departments are planned to raise money and to dispatch specific persons to live in poor villages and to use all kinds of methods to make the villages become rich. Currently, in the processes of public sector’s poverty alleviation, there are interest conflicts between three parties such as public sector, rural poor households and local organization, and the conflicts seriously affect the performance of fixedpoint poverty alleviation. The conflicts between each subject of interests can be mitigated by establishing effective communication mechanism between game subjects and by setting up institutions and regulations to restrict game subjects and by constructing sustainable cooperation trust relationship between game subjects and so on in order to raise the performance of fixed-point poverty alleviation of public sectors.