NOVELTY - Dehydrated and purified oil is pumped into electric field or electromagnetic field processor. The oil molecule is reflected in magnetic field, and oil molecule is converted into polar molecule. Methanol is induced to modified oil molecule. Cross-linking of methanol and oil is carried out with polar molecule to obtain single phase solution. Esterification reaction is carried out at 100-210 degrees C and 0.5-6 MPa for 10-52 minutes, and fatty acid methyl ester is produced. The crude ester is fractionated and fatty acid methyl ester (biodiesel oil) is obtained.    USE - Continuous production of biodiesel oil without catalyst.    DETAILED DESCRIPTION - Dehydrated and purified oil is continuously pumped into electric field or electromagnetic field processor having magnetic field strength of 5000-15000 gauss. The inner temperature of material and electromagnetic field processor is controlled to less than or equal to 80 degrees C and pressure of 0.05-0.5 MPa. The oil molecule is reflected in magnetic field, polar charge coupling is produced and oil molecule is converted into polar molecule. The modified oil molecule is induced to inlet of high pressure shearing homogenizing pump. Methanol is induced continuously to the inlet of high pressure shearing homogenizing pump such that mol ratio of oil and methanol becomes 1:3-4. Two-phase deep cross-linking of methanol with polar molecule and oil with polar molecule is carried out and oil and methanol are completely dissolved to obtain single phase solution. The single phase solution is continuously pumped into pressure resistance pipe reactor having a mixer. The steel pipe in the reactor is indirectly heated by vapor, heating oil, high flue gas or other heat carrier. Esterification reaction is carried out at 100-210 degrees C and 0.5-6 MPa for 10-52 minutes, methanol is completely penetrated into phase homogenizing material and fatty acid methyl ester is produced. The crude fatty acid methyl ester is continuously induced into fractionating tower to fractionate, separate and collect each constituent by depressurizing and fractioning method. Vapor is supplied to reduce depressurizing and vaporizing temperature and disintegration of fatty acid methyl ester at high temperature is prevented. The remaining methanol and water are discharged from fractionating tower, temperature of tower top is controlled to 70-105 degrees C and crude methanol solution is obtained after condensation. The crude methanol solution is then rectified by regular fractionating method and rectified absolute ethyl alcohol is produced. The rectified ethyl alcohol is reused as reaction material. The fatty acid methyl ester (bio diesel) is fractionated from the intermediate stage of fractioning tower. The collected product is supplied to a storage tank at less than or equal to 300 degrees C. The substance with high boiling point is collected from bottom of fractionating tower, and supplied to storage tank for reuse. Glycerin with boiling point of 290 degrees C is fractionated from intermediate stage of tower. The biodiesel oil, glycerin and fatty acid methyl ester are separated by two phase staying delaminating and phase splitting method. Fatty acid methyl ester is subjected to two solution density difference separating method in disk-type separator and biodiesel is obtained.    DESCRIPTION OF DRAWING(S) - The drawing shows the device used in continuous production of biodiesel oil.