[Obiective] Effects of stirring soil particle suspension on the analysis of soil texture were researched to provide guidance for the determination of soil mechanical composition accurately.[Methods] The comparison and analysis were carried out under different conditions, such as stirring stroke, stirring number, stirring when soil particle suspension was placed at different time and stirring at different determination time, in the determination of soil mechanical composition by gravimetric method.[Results] The stirring stroke, stirring number and stirring after suspension all had no effect on clay particle content, but had impacts on the silt and sand content. Stirring rod stirred from the liquid level down to the bottom of the precipitation tube was conducive to uniform distribution of particles, determination of the clay, silt and sand content was stable, precision was good. At the condition of the suspension setting time was more than 1 h, measurement of silt and sand content was unstable when it was stirred 30 times. Measurement of silt sand and clay content was stable, precision was good when it was stirred 45 times. The addition of stirring before the second test points had no impact to the results.[Conclusion] The optimized method was helpful to reduce the errorwas accurate and reliable, and suitable for simultaneous detection of multiple samples.