Abstract: The general situation of a structure, the characteristics and necessity of reliability research for a large spaceborne deployable antenna-structure system are presented. Eight topics are reviewed in the research work on the reliability of the structural system. In addition, the comprehensive research content and methods of the reliability in the whole process and multiple states are carried out for three phases from the launch vehicle, development and shock and on-orbit service of the structure system. Finally, the unsolved problems of the future spaceborne deployable antenna-structure in the system reliability are described.