Biodiesel is methyl (ethyl) ester derived from esterification of vegetable oils: methanol (ethanol) is added to vegetable oil in ratio 1:9 together with small amount of base or acidic catalyst, than the mix is processed in cavitation reactor. The output products of such reaction are biodiesel and technical glycerol. Both products have high commodity cost and wide seller's market. Furthermore glycerol is the excellent high-energy fuel for heating boilers. For production of biodiesel any kind of vegetable oils can be used, sunflower oil, rapeseed oil, linseed oil etc. However biodiesel derived from various oils has some differences. For example, palm oil biodiesel has the highest caloricity, but also the highest temperature of filterability and solidification. Rapeseed biodiesel has lower caloricity, but is more cold-resistant, that is why it is more suitable for European countries and Russia. The treatment of 1 ton of oil using magnetic-impulse high-frequency cavitation method requires about 15 kW electric power, it is 5-7 times less then by classic technologies. Magnetic-impulse high-frequency cavitation differs from usual cavitation effect with influence of magnetic field on microplasma formations, emerging by active cavitation. This effect was discovered and studied in the laboratory of our company. Due to the possibility to influence on cavitation area with magnetic field it became possible to solve the main technological problem the increase of operating life of work surfaces of cavitation equipment as well as the increase of intensity of cavitation influence on medium as a result of magnetic focusing of cavitation lens.