The purpose of this study is to conduct a preliminary study on the flexural deformation of photovoltaic modules in low-temperature environments. By analyzing the characteristics and influencing mechanisms of flexural deformation, theoretical basis and technical guidance are provided for the design, manufacturing, and application of photovoltaic modules, and the performance and reliability of photovoltaic modules in low-temperature environments are improved. We have developed a warping deformation testing plan for photovoltaic modules under different temperature environments using a true type test method, and measured and analyzed the warping deformation of photovoltaic modules under different temperature environments. The results indicate that low-temperature environment is the main cause of deflection deformation of photovoltaic modules, and the strength of the frame structure and materials also have a certain impact on the degree of deformation. This study can provide assurance for the long-term operation of photovoltaic modules, reduce maintenance costs and failure rates of photovoltaic systems.