A concentrator photovoltaic measuring device includes a platform, an enclosing mask, a converging lens, a concentration unit, a first temperature regulation unit, a second temperature regulation unit, a temperature detection unit, a data transmission unit, and an electricity transmission unit. With its temperature regulation function, the concentrator photovoltaic measuring device simulates the effect of seasonal temperature variation on the energy conversion efficiency of a solar cell, so as to be effective in measuring the energy conversion efficiency of the solar cell in real environment and environment having a specific variable. Also, the concentrator photovoltaic measuring device accommodates a single solar cell, so as to be capable of measuring the single solar cell.