Provided is a driving method for a beam steering device having a metasurface optical phased array, the beam steering device includes a nano-antenna, a conductor, and an active layer arranged therebetween. The driving method includes comparing a first voltage to be applied to a first electrode of one of the nano-antenna and the conductor, with a second voltage applied immediately before the first voltage, and applying a correction voltage the first electrode of the other of the nano-antenna and the conductor and then applying the first voltage. The correction voltage is applied to the first electrode and has an electrical polarity different from an electrical polarity of the second voltage.