NOVELTY - Method for utilizing Schisandra chinensis for synthesizing biodiesel, involves placing S.chinensis powder and extraction solvent into a reflux condenser, condensing the obtained powder and solvent in water bath at constant temperature, filtering the condensed materials, performing rotary evaporation process to remove extraction agent from the filtered material, drying the filter residue of S.chinensis and adding water and alcohol into dried residue, extracting the obtained mixture, filtering the extract and concentrating and drying the extract.    USE - The method is useful for utilizing S.chinensis for synthesizing biodiesel (claimed), lignans and polysaccharides.    ADVANTAGE - The obtained biodiesel is environmentally-friendly and thus solves shortage problem of fuel oil.    DETAILED DESCRIPTION - Method for utilizing Schisandra chinensis for synthesizing biodiesel, involves placing S.chinensis powder and extraction agent into a reflux condenser, condensing the obtained powder and agent in water bath at constant temperature, filtering the condensed materials, performing rotary evaporation process under reduced pressure condition to remove extraction agent from the filtered material, drying the filter residue of S.chinensis and adding water, alcohol or aqueous alcohol solution into dried residue, extracting the obtained mixture, filtering the extract, removing the residues from the filtrate, concentrating the extract and drying the extract. INDEPENDENT CLAIMS are included for the following: (1) S.chinensis oil obtained by extracting S.chinensis using extraction solvent chosen from ethyl acetate, ether, acetone, hexane and chloroform, preferably petroleum ether and filtering the obtained extract; and (2) biodiesel obtained by (a) adding S.chinensis oil and ethanol in a mass ratio of 2:13 into a reactor, adding catalyst potassium hydroxide into the reactor, refluxing the obtained mixture at 60-80 degrees C for 3-5 hours, recovering the ethanol from the mixture using a rotary evaporator, adding water into the mixture, repeating the extraction process using the extraction solvent for 4 times, maintaining the obtained extract in still condition for delaminating the layers, removing the aqueous layer of the extract, acidifying the aqueous layer until the pH reaches to 2.5, extracting the acidified aqueous solution using ether for 4 times, washing obtained extract using anhydrous sodium sulfate, centrifuging extracted liquid at speed of 5000 revolutions/second for 10 minutes, obtaining supernatant from centrifuged solution and removing the ether from the supernatant using rotary evaporator at 60 degrees C to obtain aliphatic acid, and (b) adding sulfuric acid, aliphatic acid and methanol in a volume ratio of 1:20:130 into the reactor, refluxing the mixture at 60-80 degrees C for 2-4 hours, removing the methanol from the mixture using rotary evaporator, adding water to the residual liquid, extracting the liquid using ether for 4 times, maintaining the obtained extract in still condition for delaminating the layers, obtaining ether layer from the obtained extract, regulating the extracted liquid to neutral state using water, adding anhydrous sodium sulfate to the extract and removing the remaining ether from the extract by using rotary evaporator at 60 degrees C to obtain the biodiesel.