NOVELTY - Water is added, increasing material agent is mixed in additive, hydrolyzed, refined, steam-generated, extracted and cooled. The coconut shell is mixed, hydrolyzed, steam-generated and cooled, to obtain reaction mixture. The obtained mixture is added in distilled solution and distillation column solution, to obtain mixed distilled liquid. The distillation liquid, cellulose and lignin are added and extracted to obtain transparent solution. The obtained solution is added, heated, separated and purified, to obtain biological petrol.    USE - Preparation of biological petrol.    ADVANTAGE - The method economically provides biological petrol with improved reliability without polluting the environment.    DETAILED DESCRIPTION - Water is added at 138.5-177.2 degrees C to hydrolyze, increasing material agent is mixed in the additive, water is added, temperature is adjusted at 115-120.7 degrees C, hydrolyzed for 10-20 hours in presence of benzene, refined, steam-generated, solution is extracted and cooled. The raw material is added in grass, water is added, reacted for 2-2.5 hours in presence of amine, then temperature is adjusted at 120-130 degrees C to hydrolyze for 3-10 hours in presence of propylene, cellulose and lignin, refined, steam-generated, solution is extracted and cooled. The coconut shell is mixed as raw material, water is added at 210-250.7 degrees C, hydrolyzed for 5-7 hours, then quickly cooled at 60-70 degrees C, material is added under hydrolysis reaction to continue until solution is transparent, and water is added, benzene and ketone of hydrolysis reaction is carried out, then juice and material are added, extracted, steam-generated from the solution and cooled after mixing, to obtain reaction mixture. The obtained mixture is added in distilled solution and distillation column solution, to obtain mixed distilled liquid. The obtained liquid is extracted, to obtain mixed extracting solution. The obtained solution is mixed, distillation liquid, cellulose and lignin of cracking reaction are added at 90-95 degrees C, then acetone is added and extracted at 200-22 degrees C. The obtained mixed liquid is added to continue cracking reaction at 70-80 degrees C, then gasoline is added, increasing material agent and cellulose are added, and continuously cracked, to obtain transparent solution. The distillation solution is mixed, to obtain mixing distilled solution. The obtained solution is extracted, to obtain mixed extracting solution. The obtained solution is mixed with distilled solution and mixed extracting solution at 130-140 degrees C in presence of methanol, added in coconut shell, then cooled at 60-70 degrees C, material is added at 130-140 degrees C and reacted for 1.5-2.5 hours and finally ZSM5 catalyst is added continuously, to obtain transparent solution. The obtained transparent solution is added, heated, cracking reaction is pressurized, and dimethyl ether cracking reaction is continuously added at 120-130 degrees C in methanol and acetone under the cracking reaction having density of 0.72-0.75\103 kg/m3, to obtain reaction solution. The obtained solution is separated and purified, to obtain biological petrol.