A windshield wiper blade is provided, which includes a long elastic member extended longitudinally, a wiping lever member, a spoiler supported longitudinally by the elastic member, and having a deflection portion, on the upper side of the elastic member, which bends due to the wind pressure received when a vehicle is traveling, and a base portion, on the lower side of the elastic member, for fixing the wiping lever member, and an outer plug coupled to the longitudinal end of the spoiler. A part of the outer plug is attached to the deflection portion by being inserted longitudinally thereinto, and another part of the outer plug is attached to the base portion by being hooked to the longitudinal side thereof.