本文介绍了在以8031 单片机为CPU 的数据采集仪与PC 机通信中，通信结束时出现的中断复位现象，分析了其产生的原因，并给出了解决方法。关键词：数据采集仪 中断复位 通信Abstract：This paper introduces the interruption reset condition that appears at the end of the communication between the Computer and Data-collecting machine, which is based on the 8031 Single-chip. The reason that result in the condition is analyzed. In the meantime, the solution is given.Keyword：Data-collecting Machine Interruption Reset Condition Communication