Abstract: The dispersion behavior of different particles in aqueous media and the influence of dispersant to their dispersion actions were studied. The results represent that dispersant shows different extent of dispersion actions to silica,calcium carbonate, talc and graphite. In the low concentration area of dispersant, the dispersion rules of these four particles are similar, whereas in the high concentration area,the dispersion of these particles has their respective characteristics. The dispersion actions of dispersant to calcium carbonate and talc are stronger than to silica and graphite. As to the same kind of mineral particles, the dispersion actions of dispersant to hydrophilic particles are stronger than to hydrophobic ones.