Provided is an off-grid photovoltaic power generation system based on IOT, comprising a solar photovoltaic panel array, a DC/DC converter, a DC load, an accumulator, an inverter, an AC load, a JATG interface, a wireless receiver, a management center, a wireless emitter, a controller and a display module. The system can remotely monitor the generation power of the a photovoltaic power station, and generate a power generation data report in real time; in addition, the on and off of the photovoltaic power generation system can be remotely controlled; in case of a fault, the system can be closed timely to avoid heavy loss to proprietors.