从分布式系统结构出发 ,以大坝安全监测自动化系统为例 ,系统地研究了分布式系统的可靠性问题。提出了可靠性含义及其指标 ,给出了确定可靠性指标的统计方法和提高系统可靠性的具体措施。 Based on the distributed system structure, taking dam safety monitoring automation system as an example, the reliability of distributed system is systematically studied. The meaning of reliability and its index are put forward. The statistical methods of determining the reliability index and the concrete measures to improve the reliability of the system are given.