The present disclosure relates to a label attaching apparatus comprising a mounting base; an attaching plate having a first end which is connected to a first position on the mounting base and a second end which is a free end and provided with a label attaching unit; and a driving cylinder including a cylinder body and a piston rod retractable and extendable relative to the cylinder body, the cylinder body being connected to a second position on the mounting base, a distal end of the piston rod opposite to the cylinder body being connected to the attaching plate between the first and second ends of the attaching plate, wherein the first end of the attaching plate is hingedly connected onto the mounting base so that an orientation of the label attaching unit is able to be changed by the movement of the piston rod. With the label attaching apparatus, because an inclined angle of the attaching plate relative to a vertical direction can be changed through the forth and back movement of the piston rod, this inclining adsorbing structure can adjust an angle of the attaching plate according to a bend degree of a label, thereby an attaching angle can be adjusted at a larger extend, so that the label is easily attached with the attaching plate when being adsorbed by the attaching plate, which improves an attaching efficiency of the label.