The invention discloses a device for rolling and molding a multifunctional metal roof panel, which is rapid to process and convenient to regulate and can be used for processing straight panels and variable cross-section panels with any width. The device for rolling and molding a multifunctional metal roof panel comprises a base (1), a left machine table (2), a right machine table (3), a left machine table driving motor (4), a right machine table driving motor (5), left driving chain wheels (41,42) and right driving chain wheels (51,52), wherein at least two guide tracks (11), two left drivingscrew rods (61, 62) and two right driving screw rods (71,72) are arranged on the base (1) along the transverse direction, guide blocks (12) are arranged at the bottom of the left machine table (2) and the right machine table (3) and matched with the guide tracks (11) in a sliding way, the left ends of the left driving screw rods (61,62) are fixedly connected with the left driving chain wheels (63), the right ends of the right driving screw rods (71,72) are fixedly connected with the right driving chain wheels (73), the left driving chain wheels (63) are connected with the left driving chain wheels (41,42) through left driving chains (64,65) in a driving way, and the right driving chain wheels (73) are connected with the right driving chain wheels (51,52) through right driving chains (74,75) in a driving way.