Abstract: The theoretical analysis and experimental study of a small-flow high-head vortex pump are carried out.The experimental data are collected and accessed by LabVIEW software on real time.In order to overcome error by flow pulse ＆various random factors and improve precision,Access ＆Excel are used to record and settle the data from higher precision sensors filtered by software ＆ hardware.An anti-cavitation characters experimental data of a small-flow high-head vortex pump is provided,It can be referenced for others.