介绍了单框架控制力矩陀螺 (SGCMG)系统的运动奇异机理 ,并对当前运动奇异的研究概况进行了综述 ;通过分析可以知道 ,对于 SGCMG系统奇异机理的认识 ,现在还处于一个较浅的层次上 ,还远达不到 SGCMG系统非奇异操纵的需要 ;同时指出 ,SGCMG系统奇点的分布及可回避性判别将是未来 SGCMG系统运动奇异机理研究的主要方向 The singularity mechanism of single-frame control moment gyroscope (SGCMG) system is introduced, and the current research overview of singularity of motion is reviewed. It can be seen from the analysis that the understanding of the singularity mechanism of SGCMG system is still at a shallow level , Which is far from the need of non-singular manipulation of SGCMG system. At the same time, it is pointed out that the distribution and avoidability discrimination of singularities in SGCMG system will be the main research direction of the singularity mechanism of SGCMG system in the future