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With the increasing complexity and the variety of spacecraft functions and tasks, the dependence on satellite time has been improved for various on-board systems of spacecraft. Therefore, the higher reliability and safety requirements have been brought to the satellite time management function. This paper introduces the generation and data structure of satellite time, general method of satellite time management and the principle of the satellite time auto-recovery in the exceptional circumstance. Finally, a satellite time precise auto-recovery design based on MIL-STD-1553 bus has been brought forward for the spacecraft that cannot carry the GPS receiver, such as GEO satellite and space exploration satellite.