The solar cell module defect EL detector uses the electroluminescence principle of crystalline silicon to capture the near-infrared image of the module with a high-resolution infrared camera to obtain and determine the defect of the module. The infrared detection can comprehensively grasp the internal problems of the solar cell, provide a basis for improving the production process to improve product quality, and can timely repair the problem module to reduce losses as much as possible. keywords：