Focused on voltage fluctuation caused by photovoltaic power sources output volatility, the general analysis of voltage fluctuation influence mechanism triggered by distributed photovoltaic is performed and the estimation formula of photovoltaic maximum access capacity in 10kV feeder are presented. On the basis, the relevant influence factor is summarized with feeder structure, feeder type, feeder length and load distribution included. The typical integration scenes of distributed photovoltaic are illustrated. Based on the simulation of these scenes, they are provided that the recommendation of distributed photovoltaic integration location in feeder and the influence factor evaluation results of photovoltaic integration.