There are provided an oily suspension composition that can achieve improved long-term storage stability, improved water-dispersibility and suspensibility for use after dilution, and an improved pharmacological effect of a solid active ingredient, and comprises a pulverized solid agrochemical active ingredient, and a provided method for efficiently producing such compositions. The oily suspension composition comprising a suspension comprising a pulverized active ingredient such as an agrochemical which is obtained by subjecting a solid active ingredient to wet grinding in water, an oily dispersion medium, and various emulsifiers and thickeners, and the like.
