PROBLEM TO BE SOLVED: To provide a production method in which formulations of a powder type agricultural chemical hydration agent and an agricultural chemical water solvent are not changed, and only an agent type is made into a granular agrochemical composition in production of the granular agrochemical composition in which handleability is excellent.SOLUTION: A production method of a granular agrochemical composition includes: to a powder type agricultural chemical hydration agent composition or a powder type agricultural chemical water solvent composition, (1) a process of performing addition of water, kneading, extrusion, and dehydration； (2) a process of performing addition of water, agitation granulation, and dehydration； (3) a process of performing addition of water, kneading, and atomization dehydration； (4) a process of performing addition of water, and fluid bed granulation, or (5) a process of performing a compression molding method to a powder type agricultural chemical hydration agent composition or a powder type agricultural chemical water solvent composition； (a) a process of performing disintegration to thereby performing atomization after the process (5)； and (b) depending on necessity, a process of performing sieve separation after the atomization to thereby perform particle size regulation.【課題】本発明は、取り扱い性に優れた顆粒状農薬組成物の製造に当たって、粉末状の農薬水和剤、農薬水溶剤の処方を変更せずに剤型のみを顆粒状農薬組成物とする製造方法を提供することを目的とする。【解決手段】本発明により、粉末状の農薬水和剤組成物又は粉末状の農薬水溶剤組成物に、（１）加水し、混練し、押出し、乾燥させる工程、（２）加水し、攪拌造粒し、乾燥させる工程、（３）加水し、混練し、噴霧乾燥させる工程、（４）加水し、流動層造粒させる工程、又は、（５）粉末状の農薬水和剤組成物又は粉末状の農薬水溶剤組成物を加圧成型する方法による工程の後、（ａ）解砕することによる微粒化する工程、（ｂ）必要に応じて、微粒化後に篩別することによる整粒する工程による、顆粒状農薬組成物の製造方法が提供される。【選択図】なし
