Serveral surfactants were used during experiments in order to select a wetting and a dispersing agent for a wettable powder (WP) of fungicide Propineb. The content effects of the selected surfactants on the suspensibility and the wettability of wettable powder were investigated. The optimal contents of AES as wetting agent and APS as dispersing agent for a Propineb WP were 3.1 ∼ 4.0% and 4.0 ∼ 5.0%, respectively.