The invention belongs to the technical field of adhesive tape bases, and particularly relates to an adhesive tape cutting machine. The adhesive tape cutting machine comprises supporting plates, an adhesive tape winding drum, rollers, a pressing part and cutters, and further comprises transmission units; the transmission units comprise movable rods, gears and limiting blocks, and the limiting blocks are fixed on the outer side surfaces of second pressing rods; the movable rods are in contact with the outer side surfaces of the second pressing rods, a section of sliding groove is vertically formed in the upper part of each movable rod, spherical grooves are formed in the bottoms of the sliding grooves, the diameter of each spherical groove is larger than the width of each sliding groove, thespherical grooves communicate with the sliding grooves, the limiting blocks are located in the sliding grooves of the movable rods, the limiting blocks are connected with the tops of the sliding grooves through springs I, and tooth-shaped structures are arranged on the right end surfaces of the movable rods; and the gears are rotationally installed on the outer surfaces of the supporting plates,the gears are meshed with the tooth-shaped structures of the movable rods, and the gears are fixedly connected with one roller. According to the adhesive tape cutting machine, adhesive tape can stretch out outwards by a section while the appearance of a cutting opening is attractive so that the adhesive tape can be conveniently taken for use next time.