The invention discloses a high-yield oil camellia organic composite fertilizer and a preparation method thereof. The high-yield tea-oil tree organic composite fertilizer is prepared from the followingraw materials in parts by weight: 35-50 parts of animal excrement, 20-35 parts of straw, 10-20 parts of sweet potato vines, 12-20 parts of corncob, 15-25 parts of rape seed cakes, 10-24 parts of oilcamellia cakes, 10-18 parts of dried pine needles, 2-7 parts of ammonium molybdate, 3-10 parts of kieselguhr, 5-15 parts of silkworm excrement, 8-14 parts of turfy soil, 6-12 parts of perlite, 3-6 parts of calcium superphosphate, 10-16 parts of a calcium magnesium phosphate fertilizer, 3-8 parts of 3-8 parts of potassium xanthate, 2-7 parts of calcium propionate, 1-3 parts of sodium selenite, 2-7parts of potassium chloride and 4-11 parts of calcium nitrate. By adopting the high-yield oil camellia organic composite fertilizer disclosed by the invention, the yield of camellia oil can be greatlyincreased.