The utility model provides a distributed type three-phase four-wire photovoltaic grid-connected device with an electric energy adjusting function, belonging to the technical field of a multifunctional photovoltaic grid-connected device, and solving the problem that the conventional device cannot compensate an idle component, a harmonic component and an unbalanced component generated by user electricity load, so that the pollution on a power grid, caused by grid-connected current of the components, cannot be eliminated. The distributed type three-phase four-wire photovoltaic grid-connected device comprises the power grid, the user electricity load, a photovoltaic array, a DC/DC (Direct Current/Direct Current) convertor, a three-phase four-wire grid-connected current transformer, a digital signal processing control unit, a circuit breaker, a first detector and a second detector; the first detector is used for detecting output-phase current at an alternating current side of the three-phase four-wire grid-connected current transformer, and input voltage and current of the user electricity load; and the second detector is used for detecting output voltage and current of the photovoltaic array. The distributed type three-phase four-wire photovoltaic grid-connected device is used for production and scientific researches of multi-direction development of a solar energy source, and is particularly suitable for a photovoltaic grid-connected generation device which is combined with a building and is connected with the power grid in a three-phase four-wire manner.