本文结合单倾斜热线和五孔探针测量方法，使用周期多点采样及集平均技术，自行研制开发了一套适合于流体机械内部流场动态测量的数据自动采集和实时处理系统，并将它应用于流体机械叶轮出口三维流场的测量。文中给出了两个测量例，验证了本方法和测试系统的实用性和可靠性。 In this paper, a set of automatic data acquisition and real-time processing system suitable for the dynamic measurement of flow field in a fluid machine is developed by using multi-point sampling and set averaging technique combined with single inclined hotline and five-hole probe measurement method. Applied to the measurement of three-dimensional flow field at the outlet of fluid machinery impeller. Two measurement examples are given in the paper, which verify the practicability and reliability of this method and test system.