The invention discloses a modularized vehicle rectifier bridge. A utility model (single-arm bridge vehicle rectifier diode) (2) (the application number is 200920041858.7) of the company is used as a mechanical core and clamped between a positive plate (3) and a negative plate (1); the positive plate (3) and the negative plate (1) are welded at both ends of the single-arm bridge vehicle rectifier diode (2) by one-step vacuum welding; and both ends of the positive plate (3) and the negative plate (1) are connected by hollow rivets (6); one hollow rivet (6) is the positive electrode output port of the rectifier bridge; the other hollow rivet (6) is the negative electrode output port of the rectifier bridge; and the hollow rivets (6) is welded and molded with the positive plate (3) and the negative plate (1) in one step. The modularized vehicle rectifier bridge has no lead connection, improves the quality and prolongs the service life of the vehicle rectifier bridge, has simplified process, high production efficiency and low manufacture cost, does not need fastening pieces for connection and prevents the fastening pieces from loosening or dropping off due to vibration to cause generator failure.