Although the Chinese solar semiconductor lighting industry has been developing rapidly, the detecting technology of this has developed slowly. Therefore, the performance testing device of solar lighting system would be practical significant. In view of this, this paper was mainly using the Hall current sensor, USB data acquisition card and other components to build a solar lighting system detection device. During the actual testing, the system can monitor and evaluate the real-time performance of the photovoltaic street lighting system very well, and achieves the desired effect.