The invention discloses a synchronous belt conveying automatic shoe cover machine. A shoe film conveying device comprises a synchronous belt motor (12), left and right guide rods (11), left and right synchronous belts (13), front and rear transmission shafts (14), left and right sliding blocks (7 and 8) and left and right movable plates (5 and 6). The front and rear transmission shafts (14) are arranged on the front and the rear of a base (25), the left and right synchronous belts (13) can be arranged on the front and rear transmission shafts (14), the synchronous belt motor (12) drives the left and right synchronous belts (13) to synchronously rotate through the front and rear transmission shafts (14), the left and right guide rods (11) are arranged above the left and right synchronous belts (13), the left and right sliding blocks (7 and 8) are fixed to the left and right synchronous belts (13) and correspondingly arranged on the left and right guide rods (11) in a sliding mode, the left and right movable plates (5 and 6) are elastically arranged on the left and right sliding blocks (7 and 8), and the left and right movable plates (5 and 6) are sleeved with a shoe film sealed end on a shoe film roller (34). By means of the structure, the synchronous belt conveying automatic shoe cover machine has the advantages of being reasonable in structural design, convenient to operate and use, high in shoe cover forming speed, full-fashioned in wear, high in automation degree and the like.