The invention discloses a special fertilizer for eucommia forest, and a preparation method and application method thereof. The fertilizer is prepared by mixing a granular fertilizer mixture prepared by mixing urea, monoammonium phosphate and potassium sulfate with shrimp/crab shell powder, dry chicken manure and dry cattle manure. The fertilizer is environment-friendly and effective, and can enhance the yield of eucommia and the content of the main drug effect substance pinoresinol diglucoside. The method has the advantages of wide raw material sources, simple production technique, convenient fertilizer application process, low production cost and obvious application effect, and can effectively solve the problem of difficulty in supply of the eucommia crude drug.