The invention discloses a photovoltaic inverter intelligent starting control system, comprising a boost circuit, an inverter bridge, a grid connected switch and a controller. The output of the boost circuit is in connection with the inverter bridge through a DC bus; the output of the inverter bridge is in connection with the grid connected switch through a filter; the grid connected switch is connected to a power grid system; the controller samples a bus voltage. The system employs the inverter bridge to generate higher harmonics, improves loss of a main switch devices, a filtering inductor and a filtering capacitor, saves a routine starting resistor, and improves self loss of an inverter under no load conditions, thereby realizing testing of the loading capacity of a solar panel, avoiding inverter frequent starting in the morning, guaranteeing the operation life of the grid connected switch, and reducing a failure rate of a photovoltaic inverter system. The method is realized by a digital controller, does not need to be provided with extra hardware, and possesses the characteristics of intelligence, low cost and strong versatility.