NOVELTY - A bio-diesel and alcohol group fuel device for one-step synthesis at normal temperature and pressure comprises synthesis kettle (1), static stirring machine (2), measuring grooves (3, 4, and 5), connection pipes (6, 8, 12, 15, 19, 21, 26), separating machine (7), dry-clean kettle (9), dry-cleaner measuring groove (10), stirring machine (11, 25), filtering machine (13), bio-diesel jar (14), refining kettle (16), filtering machines (13, 20), refiner measuring groove (17), reacting kettle (22), auxiliary agent measuring grooves (23, 24), filter (27), and alcohol group fuel jar (28).    USE - The bio-diesel and alcohol group fuel device is useful for one-step synthesis of swine, bovine, and goat oil into bio-diesel at normal temperature and pressure.    ADVANTAGE - The device operates by single kettle intermittently or product by series-connected multiple kettles continuously. Static stirring machine in the synthesis kettle is provided with instant high thinning power capable of directly synthesizing swine, bovine, and goat oil with high solidifying point and palm oil into bio-diesel in one step at normal temperature and pressure, and the synthesis time can be shortened into 10 minutes.    DETAILED DESCRIPTION - A bio-diesel and alcohol group fuel device for one-step synthesis at normal temperature and pressure comprises synthesis kettle (1), static stirring machine (2), separating machine (7), dry-clean kettle (9), bio-diesel jar (14), refining kettle (16), filtering machines (13, 20), reacting kettle (22), filter (27), and alcohol group fuel jar (28). The upper of synthesis kettle (1) is installed with oil, methanol, catalyst measuring grooves (3), (4), and (5), respectively; internal of the kettle is installed with static stirring machine (2); outlet on the kettle bottom is connected to inlet in left upper of the separating machine (7) through connection pipe (6); outlet in right upper of the separating machine (7) is connected to inlet in left upper of the dry-clean kettle (9) through connection pipe (8); outlet on right lateral of the separating machine (7) is connected to inlet in left upper of the refining kettle (16) via connection pipe (15); right upper of the dry-clean kettle (9) is provided with dry-cleaner measuring groove (10); the kettle is installed with stirring machine (11) inside; outlet on the kettle bottom is connected to filtering machine (13) and bio-diesel jar (14) through connection pipe (12); right upper of the refining kettle (16) is installed with refiner measuring groove (17); the kettle is installed with stirring machine (8) inside; outlet on the kettle bottom is connected to filtering machine (20), connection pipe (21), and upper-middle part of the reacting kettle (22) through connection pipe (19); left and right uppers of the reacting kettle (22) are respectively installed with additive, auxiliary agent measuring grooves (23) and (24); the kettle is installed with stirring machine (25) inside; outlet on the kettle bottom is connected to filter (27), alcohol group fuel jar (28) through connection pipe (26).    DESCRIPTION OF DRAWING(S) - The drawing shows the schematic view of the bio-diesel and alcohol group fuel device.    Synthesis kettle; (1)    Static stirring machine; (2)    Separating machine; (7)    Dry-clean kettle; and (9)    Bio-diesel jar (14)