Acoustic Doppler Current Profilers（ADCP）is widely employed in flow measurement in hydrological industry because of its convenience and efficiency，high measure speed and extensive speed range.At present，there is no instrument calibrating institution of ADCP in our country，which is different from current-meter method.In order to understand the instrument capability of cruising ADCP used in different hydrometric stations of Yichun hydrological bureau and find out the main factors that influence the accuracy，8 ADCPs from different manufacturers were calibrated in this paper.The result showed that all of the 8 ADCPs had high performance，which could meet the requirements of specifications of surveys.