With the calibration of suspended matter turbidity as the research object, the best method to measure the suspended sediment concentration was attempted to be found, through the analysis of the correlation between the concentration results obtained by different calibration methods and turbidity meter. According to the comparison and analysis of the measured data over the years, it is found that on -site sucking filtration method is time-saving, low-cost, highly efficient and more reliable, being compared with natural incineration, indoor filtration method and drying precipitation method, with the main reason that there are many factors affecting the experiment in laboratory, such as the adsorption of container wall, growth of microorganisms in water samples during transportation and storage, and the systematic error of natural incineration that the organic matter of water sample would be volatile, resulting in the research object of the data different from the observation instrument, and hence the reliability is reduced. On-site sucking filtration method is not only suitable for using in relatively stable inland river, but also be strongly practical of the estuary sediment concentration measurement where the flow pattern is complex and the change of sediment concentration is great.