NOVELTY - Producing biodiesel by distillation and deodorization, comprises e.g. water washing crude methyl ester, conveying into a disc-type centrifuge (2), centrifugal separating, transferring upper layer into aqueous crude methyl ester temporary storage tank (3), heating by tubular steam heater (4), conveying into falling-film dehydration tower (5), removing water, passing sequentially through e.g. primary crude methyl ester heat exchanger, entering distillation tower, heating and distilling, passing through the light component recycling cooler, cooling, and exporting bio-diesel oil product.    USE - The method is useful for producing biodiesel by distillation and deodorization (claimed).    ADVANTAGE - The method reduces production cost of energy consumption by more than 20%, increases the smelly substance (light component oil) yield; ensures stable operation of vacuum machine; ensures diesel yield is more than 92%, and acid value is not greater than 0.5 mg potassium hydroxide (KOH)/g, without peculiar smell.    DETAILED DESCRIPTION - Producing biodiesel by distillation and deodorization, comprises removing glycerin soap and crude methyl ester from crude methyl ester temporary storage tank (1), water washing, conveying crude methyl ester into a disc-type centrifuge (2), centrifugal separating for 10-15 seconds, transferring upper layer crude methyl ester into aqueous crude methyl ester temporary storage tank (3), heating by tubular steam heater (4) to 100-110 degrees C, then conveying into falling-film dehydration tower (5) to remove residual moisture, removing water from the falling film dehydrating tower, transferring upper crude methyl ester from falling film tower into crude methyl ester temporary storage tank, passing sequentially through a primary crude methyl ester heat exchanger, secondary crude methyl ester heat exchanger and crude methyl ester thermal oil heat exchanger, entering into a distillation tower, heating and distilling, overflowing material from the distillation column, passing through the light component recycling cooler, and cold light component collecting device, cooling, transferring into a light component tank, and exporting out the biological diesel oil product from the distillation column outlet upper part, sequentially flowing through the secondary crude methyl ester heat exchanger, waste methanol pre-heater and a finished product circulating water cooler, and then into biological diesel oil finished product tank.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic representation of the biodiesel producing device.    Crude methyl ester temporary storage tank (1)    Disc-type centrifuge (2)    Aqueous crude methyl ester temporary storage tank (3)    Tubular steam heater (4)    Falling-film dehydration tower (5)