Based on the introduction of the distributed PV concepts and principles, this paper focuses on the impacts on the grid of distributed photovoltaic power generation performance, and combes the literatures of the economy. Performance The impacts on the grid performance include aspects of voltage, island effect, photovoltaic efficiency and harmonics. In economic terms, this paper describes the models of different perspectives and scholars. This study hopes it can be helpful to other scholars in the study of distributed photovoltaic grid.