After the collapse of the unit-neighborhood system,the communities in China have got a nature of duality,from which a mixed dual duty structure is derived.This structure calls for a re-establishment of the principals for community financial system from such aspects as fund raising mode,budget supervision,and allocation program,etc.There exist some defects in the present community financial system,such as one-sided design,insufficient fund resource for community outlay,lower efficiency of fund operation,lacking of coordination in community construction investment,etc.which seriously restrict the functions of modern community.In order to construct a community oriented public fiscal system,we need to clarify the division of responsibilities between the government and the community,give full play to community’s potential in self-governance and construct a comprehensive fund allocation mechanism. After the collapse of the unit-neighborhood system, the communities in China have got a nature of duality, from which a mixed dual duty structure is derived. This structure calls for a re-establishment of the principals for community financial system from such aspects as fund raising mode, budget supervision, and allocation program, etc.There are some defects in the present community financial system, such as one-sided design, insufficient fund resource for community outlay, lower efficiency of fund operation, lacking of coordination in community construction investment, etc.which seriously restrict the functions of modern community. In order to construct a community oriented public fiscal system, we need to clarify the division of responsibilities between the government and the community, give full play to community’s potential in self-governance and Construct a comprehensive fund allocation mechanism.