The invention aims at providing a granular pesticide preparation which can be prepared by a simple and easy process and attain optimum controlled-release of pesticidal active ingredients and which is reduced in environmental load and in sufferings induced by pesticidal active ingredients and exerts stable drug effects. The invention relates to a granular pesticide preparation which consists of both non-disintegrating pesticide granules comprising an acid pesticidal active ingredient, a cationic surfactant, and a basic substance and causing no disintegration in water within 30 minutes and a pesticidal active ingredient and which has a particle size of 0.3 to 3 mm in diameter or of 0.6 to 3 mm in breadth and 2 to 10 mm in length and the property of falling into water after the application on water surface and disintegrating in water within 30 minutes.