Satellite panel is an important part of satellite, and its modeling accuracy and reliability are very important for satellite design and manufacturing. However, how to improve the accuracy and reliability of satellite panel modeling has become a key issue to be solved urgently in the field of satellite technology. In this research, based on the sandwich sandwich theory, a new finite element model for satellite panels is constructed, which can numerically express the multi-layer structure, material properties and their interactions of satellite panels, and more accurately predict and simulate the behavior of satellite panels under various conditions. In the process of model building, Lanczos method is used to analyze the modal of the satellite solar panel model, and the frequency coincidence analysis between the analysis results and the real mode is carried out. The results show that the frequency error of the first five modes is less than 5%, which indicates that the established finite element model of satellite solar panel has high accuracy. It can well capture the modal characteristics of satellite solar panel in the vibration process. Using Modal confidence and MAC (Modal Assurance Criteria) to assess, conform to the degree of its MAC value is above 0.9, conform to the Modal correlation standard. To sum up, the satellite panels finite element modeling method is appropriate, has the high accuracy and reliability, can better meet the needs of design and manufacture of satellite, promote the sustainable development of satellite technology and progress