Abstract: The delamination caused by the aggregation of particles can be avoided by dispersant. Four dispersant from twenty eight types of domestic dispersant were selected for 20% carbofuran·thiram SCF, 26% thiram·carbendasim·tolclofos methyl SCF and 20% carbofuran·carbendasim·tolclofos methyl SCF. The results of accelerated experiments in the condition of (54±2)℃ showed that the dispersant 16# can improve the suspension stability of the three formulations at the mass fraction of 6.0%,4.0% and 5.0%.