The present invention provides a meteorological parameter test method for photovoltaic power station system electric efficiency evaluation. The method comprises the following steps: I, determining meteorological data collection points in the photovoltaic power station; II, setting meteorological parameter measurement devices at the meteorological data collection points; III, performing clock synchronization of the meteorological parameter measurement devices and a power acquisition device; IV, collecting data; and V, analyzing data. A plurality of meteorological parameter measurement devices are optimally arranged at four physical points of the photovoltaic power station to measure, and the disadvantage is improved that only one physical point is arranged for traditional photovoltaic power station meteorological data measurement, so that the test error is reduced, and the electric efficiency evaluation precision of the photovoltaic power station is improved.