PURPOSE: A dust-granule formulation for preventing soil-borne diseases is provided to reduce drift(fly) and to suppress effect insufficiency by drug ununiformity. CONSTITUTION: A dust-granule formulation for preventing soil-borne diseases contains an active ingredient for preventing soil-borne diseases, mineral carriers, and polyoxyalkylene resin ester. The polyoxyalkylene resin ester is polyoxyethylene resin ester or polyoxyethylene polyoxypropylene resin ester. The soil-borne diseases are clubroot or phytophthora blight. The active ingredient is 2',4-dichloro-alpha,alpha,alpha-trifluoro-4'-nitro-m-toluenesulfonaylide, 3-chloro-N-(3-chloro-5-trifluoromethyl-2-pyridyl)-alpha,alpha,alpha-trifluoro-2,6-dinitro-p-toluidine or 3-(3-bromo-6-fluoro-2-methylindole-1-ylsulfonyl)-N, N-dimethyl-1, 2, 4-triazole-1-sulfonamide. The dust-granule formulation additionally contains surfactant.드리프트가 저감 되며, 또한 약효의 불균일에 의한 효과 부족의 발생이 억제되는 토양병해 방제용 분입제제를 제공한다.토양병해 방제용 분입제제에, 토양병해 방제용 활성 성분의 적어도 1종과, 광물 담체의 적어도 1종과, 폴리옥시알킬렌 수지산에스테르의 적어도 1종을 함유시킨다.