NOVELTY - Biological organic composite fertilizer comprises 100-125 pts. wt. crops straw, 300-400 pts. wt. livestock manure, 80-100 pts. wt. tobacco leaf, 50-60 pts. wt. fructus meliae toosendan, 80-100 pts. wt. wild Chrysanthemum flower, 60-80 pts. wt. urea, 50-75 pts. wt. potassium sulfate, 45-60 pts. wt. ammonium chloride, 35-50 pts. wt. sodium selenite, 15-20 pts. wt. zinc sulfate, 3-4 pts. wt. effective microorganisms (EM) inoculum and 10-12 pts. wt. soil conditioner including 120-130 pts. wt. weathered coal, 3-4 pts. wt. nano jade powder and 1-2 pts. wt. borax.    USE - Biological organic composite fertilizer.    ADVANTAGE - The biological organic composite fertilizer is non-toxic and eco-friendly, and has reduced heavy metal element and increases yield of crops.    DETAILED DESCRIPTION - Biological organic composite fertilizer comprises 100-125 pts. wt. crops straw, 300-400 pts. wt. livestock manure, 80-100 pts. wt. tobacco leaf, 50-60 pts. wt. fructus meliae toosendan, 80-100 pts. wt. wild Chrysanthemum flower, 60-80 pts. wt. urea, 50-75 pts. wt. potassium sulfate, 45-60 pts. wt. ammonium chloride, 35-50 pts. wt. sodium selenite, 15-20 pts. wt. zinc sulfate, 3-4 pts. wt. effective microorganisms (EM) inoculum and 10-12 pts. wt. soil conditioner including 120-130 pts. wt. weathered coal, 2-3 pts. wt. alcohol ester, 3-4 pts. wt. nano jade powder, 1-2 pts. wt. borax, 1-2 pts. wt. salicylic acid, 2-3 pts. wt. nano calcium carbonate, 2-3 pts. wt. neopentyl alcohol, 1-2 pts. wt. soybean oil, 2-3 pts. wt. sodium selenite, 3-4 pts. wt. Eucalyptus oil, 4-5 pts. wt. Mallotus apelta, 3-4 pts. wt. plantain and balance amount of water. The soil conditioner is prepared by grinding Mallotus apelta and plantain into powder, then adding weathered coal, borax, salicylic acid and proper amount of water, uniformly mixing and stirring to obtain slurry, then heating at 80-90 degrees C, then adding nano jade powder, nano calcium carbonate powder and neopentyl alcohol, continuously grinding for 30-40 minutes, then adding other remainder component, uniformly stirring, concentrating, then granulating and drying. An INDEPENDENT CLAIM is included for preparing biological organic composite fertilizer comprising mixing crops straw, livestock manure, tobacco leaf, fructus meliae toosendan, wild Chrysanthemum flower effective microorganisms (EM) inoculum, stirring, and then adding 25-35% of water, fermenting for 8-10 days, cooling, drying at high temperature, crushing, then uniformly mixing with urea, potassium sulfate, ammonium chloride, sodium selenite and zinc sulfate, granulating, then adding soil conditioner and uniformly mixing.