太阳帆是人类向太空发射的一种宇宙探测器。本文推导建立了太阳帆结构分析的理论方程组；利用数值计算方法进行了全结构分析；采用罚函数法，确定了满足各种技术条件下的转速及辐条长度之间的可用范围；同时，在引入某些假设的前提下，得出了方程组的近似理论解。它们为太阳帆强度分析、结构形状保持能力提供了论理基础，也为太阳帆的设计提供了依据。本文最后提供了某实际发射的太阳帆结构的分析结果。本文的分析手段可作为大型柔性结构分析的参考 Solar sails are a type of spacecraft launched by mankind into space. In this paper, the theoretical equations of the structure analysis of solar sail are established. The whole structure is analyzed by the numerical calculation method. The penalty function method is used to determine the range of available speed and spoke length under various technical conditions. At the same time, The introduction of some assumptions under the premise of the equations approximate theoretical solution. They provide the theoretical basis for the strength analysis of solar sail and the ability of structural shape retention, and also provide the basis for the design of solar sail. This article concludes with an analysis of the actual launch of the solar sail structure. The analysis method of this paper can be used as a reference for large-scale flexible structural analysis