Abstract: With the large-scale access of distributed photovoltaic in distribution networks, operation stability of power grid, power quality and system protection are significantly affected. In this paper, through the analysis of photovoltaic output characteristics and daily load characteristics in typical areas, a mathematical model of distributed photovoltaic consumption capability is established and the distribution network model with distributed photovoltaic is simulated by ETAP simulation software, and analyzes the consumption capability of typical regional distribution network for distributed photovoltaic access, which provides theoretical support for optimizing the access scheme selection.