The invention relates to a disease-preventing type special controlled-release fertilizer for Shandong peanuts as well as a preparation method and application thereof. The disease-preventing type controlled-release fertilizer is prepared from the following raw materials: humic acid coated urea, humic acid coated calcium chloride, sulfur-polymer coated urea, diammonium phosphate, granular potassium chloride, zinc sulfate, boric acid, thiodiazole-copper preparation, carbendazim preparation and fenamiphos granular formulation. The release and proportioning of nutrients in the controlled-release special fertilizer for Shandong peanuts are suitable for nutrient conditions and peanut absorption requirements of soil in main peanut production areas in Shandong, and simultaneously, medicaments for preventing and controlling main diseases such as peanut stem rot, root rot, bacterial wilt, root-knot nematode and the like are added. When peanuts are seeded, the disease-preventing type special controlled-release fertilizer for Shandong peanuts is applied for one time, so that labor and time are saved, and disease-preventing and yield-increasing effects are good.