Abstract: As an important attachment of spacecraft,solar array experiences complex environment of periodic heating and cooling when traveling in orbit,and time-dependent temperature gradient is generated in its structure.It leads to thermal distortion,even thermally induced vibration,which would probably influence normal operation of the spacecraft.Thermal environment of the in-orbit spacecraft is described in this paper at first.Then,advances in thermal analysis,thermal-structural analysis of structure elements and stability analysis of solar array are summarized.Finally,the prospects of thermal-structural analysis of solar array are discussed.