[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.