为保证快速可重组制造系统的工作质量 ,给出了其可诊断性的定义 ,在快速可重组制造系统结构模型的基础上提出了系统运行过程中的可诊断性的概率模型和矩阵模型 ,根据矩阵模型得出保证快速可重组制造系统具有完全可诊断性时系数矩阵应为满秩矩阵 ,并进行了论证。实践证明这个方法能快速地用于快速重组系统的可诊断性估计 In order to ensure the working quality of the rapid reconfigurable manufacturing system, the definition of its diagnosticablity is given. Based on the reconfigurable manufacturing system structure model, a probabilistic model and a matrix model of diagnosable system are put forward. The matrix model shows that when the reconfigurable manufacturing system is completely diagnoseable, the coefficient matrix should be a full rank matrix, and the proof is given. It has been proved that this method can be quickly used to diagnose the rapid reconfiguration system