The invention belongs to the technical field of cold rolling sheet machining, and particularly discloses soft sheet longitudinal shearing guide equipment. The soft sheet longitudinal shearing guide equipment comprises supporting columns, a bottom plate, driving gears, driven gears, rotating rods, supporting rods, elastic belts, guide supports and guide roller shafts, the two ends of the bottom plate are each provided with one supporting column, the supporting columns are fixedly arranged on the bottom plate, each supporting column is rotatably provided with one driving gear and one driven gear, the driving gears and the driven gears are engaged, the upper part and the lower part of each supporting column are each provided with one rotating rod, one ends of the rotating rods are rotatably arranged on the supporting columns, the driving gears and the driven gears are engaged with the rotating rods correspondingly, the other ends of the rotating rods are hinged to the supporting columns through the supporting rods, the elastic belts are arranged between the rotating rods, the guide supports are hinged to one sides of the rotating rods, the guide roller shafts are arranged in the middles of the guide supports through rotating shafts, the guide roller shafts can clamp a soft sheet, the elastic belts can wrap the side face of the soft sheet, side deforming of the soft sheet can be avoided, and the longitudinal shearing size precision of the soft sheet can be improved.