The present invention provides a special controlled release fertilizer for sugarcane and a preparation method for the fertilizer, and belongs to the technical field of fertilizers. The fertilizer comprises an outer wrapping layer and an inner fertilizer particle composed of a natural polymer coating material. The fertilizer particle is prepared by mixing the following raw material components: urea, calcium superphosphate, ammonium chloride, potassium chloride, humic acid, diammonium phosphate, agricultural rare earth, borax or boric acid, copper sulfate, zinc sulfate, magnesium sulfate, ferric nitrate, ammonium molybdate, compound sodium nitrophenolate, polyglutamic acid, and an adhesive. The fertilizer contains abundant and comprehensive nutrient components, can satisfy the requirement on various nutrients in a normal growth process of sugarcane, and the fertilizer enhances the disease resistance, the drought resistance and tje lodging resistance of the sugarcane, and increases the yield per mu; the fertilizer has a good controlled release effect, effectively reduces the fertilizer nutrient loss, and increases the fertilizer utilization; and the selected natural polymer coating material has an excellent biodegradation performance, causes no ecological pollution, and has an environmental-friendly effect.