The effects of the mass fraction of GY-D08,pH value and inorganic ions on the dispersion stability of flufenoxuron suspension concentrate were studied by means of measuring zeta potential and average size analysis. The dispersion stability of suspension concentrate was closely related to the mass fraction of GY-D08; the optimum mass fraction of GY-D08 was 2% ( mass fraction) when preparing 5% ( mass fraction) flufenoxuron suspension concentrate with GY-D08; the dispersion stability would be worse on conditi...