Abstract: Adsorption of chlorpyrifos and fenvalerate in 3 different soils, which were representative soil in Ningbo, was studied by batch equilibration technique. The result showed that the Kd values of chlorpyrifos in tested soils were 121.4088,477.7604 and 3537.0809 respectively, and the Kd values of chlorpyrifos were 15.7476、100.8772、102.3091 respectively. This suggested that adsorption of chlorpyrifos in tested soils were significantly intense than that of fenvalerate. Except for organic matter in soils, the Kd values were positively correlated with the CEC of soil .