In order to effectively solve the long-standing problem of suspended load test at Wanjiabu hydrological station,the original test method of the station is optimized.The article introduces the working principle of the AYX2-1 type suspended mass sampler and its comparative test results at the station.The comparative analysis of the test data,collected from the high,medium and low water levels since 2019,shows that the sampler inlet flow rate coefficient and the consistency of the collected samples can meet the requirements of the specification.According to the sampler,the working principle and the daily test plan of the suspended load of the station,the corresponding sampling models were constructed for the sampling during the single,sand-breaking and special water regimes,which improve the sampling efficiency and accuracy,and the operability is strong.