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In order to meet the measurement requirement of the FP series hydrometric propellers,a design scheme of a portable test and verification system is presented in this paper.The geometric parameter of the annular flume is designed based on the constraint conditions such as uniform motion time. FPGA and upper monitor are used as the core of data processing and control which can control the rotation speed of servo motor accurately.The communication mode between photoelectric encoder and wireless camera with upper monitor is designed. Consequently, the standard flow velocity value and the flow probe indication value can be read into the upper monitor.In addition, the processing methods of test data and the structure of control software are analyzed.Furthermore, the measurement error of the experimental device is studied. The results show that the expanded uncertainty of standard flow velocity is 1.28×10-3m/s, which meets the design requirement of the calibrating device. In other words, the device can be used as the calibration standard device of FP series hydrometric propellers.