In the brutal temperature environment in Sinus Iridium with the range between - 180°C to +90°C, it needs to solve camera heat dissipation during lunar daytime and heat preservation in moonlit night without electric energy supply under the complex rotation of YuTu Rover mast. Besides, the uncertainty of lunar dust still results in risks to thermal design. In order to solve the extreme high temperature problem in daytime, the mast rotates to an optimal position for heat dissipation and avoids the camera being too hot, and the proportion of power on and off is optimized. In extremely low temperature at night, the thermal coupling state of the camera and the rover has been changed： the mast is folded into the fence to keep warm by means of heat preservation systems. Based on the analysis of the cause of dust subsidence, the max sun elevation angle for working is restricted to avoid risks by dust. According to the thermal analysis results and in-orbit results, it can be confirmed that the highest temperature decreased 15 degrees by methods of finding optimal position and optimizing the proportion of power on and off. By folding the mast in moon night, cameras have safely undergone the cold night, therefore 4. 5W power generated by RHU has been saved. It indicates that the coupling method between thermal control and posture adjustment can be used to solve the high-low temperature problem of movable cameras on the planet' surface rover, and reduce the rover power demand for RHU. It could provide thermal design reference for the follow-on celestial body surface explorations. [ABSTRACT FROM AUTHOR]