The invention relates to a professional sustained-release fertilizer for honeysuckle flowers. The fertilizer is prepared from the raw materials of, by weight: 50 parts of urea, 15 parts of ammonium carbonate, 5 parts of potassium chloride, 5 parts of humic acid, 3 parts of manganese sulfate monohydrate, 3 parts of amino acid, 3 parts of calcium superphosphate, 1 part of calcium-magnesium-phosphorous, 2 parts of potassium sulfate, 2 parts of zinc sulfate, 2 parts of manganese sulfate, 2 parts of aluminum silicate, 2 parts of borax, 1 part of ferrous sulfate, 1 part of zinc sulfate heptahydrate, 1 part of copper sulfate pentahydrate, 1 part of sodium molybdate dihydrate, and 1 part of a coating agent. The fertilizer provided by the invention assists in enhancing the utilization rates of other fertilizers to honeysuckle flowers, improving fertilizing effect, reducing fertilizer dose, improving honeysuckle flower disease resistance, resisting pests and diseases, resisting lodging, resisting frost damage, improving soil, accelerating honeysuckle flower growth, enhancing photosynthesis, accelerating root system growth, increasing root system coverage, enhancing drought resistance, improving honeysuckle flower yield, and improving honeysuckle flower quality.