The invention provides a wire arranging device for a machine room. The wire arranging device is used for facilitating wire arranging work in the machine room. The wire arranging device comprises a buckle head, a binding tape, oblique teeth, clamping blocks and limiting blocks, wherein a clamping groove is arranged in the right side of the buckle head; a bump is arranged at a mounting end of the binding tape; the bump is inserted into the clamping groove to achieve detachable connection of the buckle head and the binding tape; a screw rod is arranged at the left side of the buckle head and is rotationally arranged on the buckle head; a rotary knob is fixed on the screw rod arranged outside the buckle head; a nut is cooperatively arranged on the screw rod arranged in the buckle head; a push rod in sliding connection with the inner wall of the buckle head is fixed on the nut; the plurality of oblique teeth are arranged on the binding tape; a plurality of clamping blocks which are arranged at equal intervals are arranged between the oblique teeth and the buckle head and are of an isosceles triangle structure; and the clamping blocks are flexible parts and enclose a cylindrical structure when the binding tape extends into the buckle head. According to the wire arranging device for the machine room, clamping and limiting of a cable can be effectively achieved; and cable arrangement is facilitated.