NOVELTY - Producing biomass diesel comprises (a) mixing an oil and an active agent in a high-speed rotating machine comprising a dispersing rotor and a stator, (b) passing immiscible liquid mixture and hydrogen gas to a long-necked valve homogenizer under high pressure and shear conditions, setting a constant water bath and pre-hydrogenating, (c) releasing pressure from homogenizer comprising pre-hydrogenated product through a channel outlet and contacting the product with a honeycomb catalyst plate, and (d) recycling the catalyst and continuously recovering biodiesel.    USE - The method is useful for producing biomass diesel (claimed).    ADVANTAGE - The method is capable of continuously, efficiently and rapidly increasing the conversion rate of oil hydrogenation to produce biomass diesel without requiring high temperature conditions.    DETAILED DESCRIPTION - Producing biomass diesel comprises (a) mixing an oil and an active agent in a mass ratio of 2:0.01-0.03 in a high-speed rotating machine comprising a dispersing rotor and a stator, where an impact force is generated in between the gap of the stator and the rotor for effective emulsification and dispersion, (b) passing immiscible liquid mixture obtained in step (a) and hydrogen gas to a long-necked valve homogenizer under high pressure and shear conditions, where the homogenizer has a length of 200-250 cm and a pore size of 0.5-1 mm, and volume ratio of hydrogen and oil is 100:1-300:1, setting a constant water bath at 80-100 degrees C, mixing the solution with high-speed and then pre-hydrogenating, (c) releasing pressure from long-necked valve homogenizer comprising pre-hydrogenated product through a channel outlet and contacting the product with a honeycomb catalyst plate comprising a catalytically active agent and a carrier hydrogenation catalyst at 120-150 degrees C, and (d) recycling the catalyst, separating water and by-product gases and continuously recovering biodiesel by rotary separator at 1200-1800 revolutions per minute. The carrier hydrogenation catalyst comprises amorphous silicon oxide, preferably aluminum oxide, silicon oxide, titanium oxide, zeolite molecule sieve, gamma -aluminum oxide. The catalytically active agent comprises dinickel phosphide, iron, palladium, platinum, molybdenum phosphide or cobalt phosphide.