The utility model relates to a distributed photovoltaic power generation access system. The distributed photovoltaic power generation access system is characterized in that the system includes a low-voltage main protection switch, a low-voltage anti-islanding device, a user main switch and a grid-connection low-voltage circuit breaker; and a power distribution transformer, the low-voltage main protection switch, the low-voltage anti-islanding device, the user main switch and the grid-connection low-voltage circuit breaker are connected with one another sequentially. With the distributed photovoltaic power generation access system of the utility model adopted, three lines of defense can be provided for the guarantee of power distribution grid and distributed photovoltaic grid-connected operation and the safety of maintenance personnel. The distributed photovoltaic power generation access system has anti-islanding protection, low-voltage lockout, voltage existence detection and automatic grid connection, voltage existence detection switching on and voltage loss tripping functions, and can assist in ensuring the safety of maintenance personal.