A guide device for hard workpiece transfer is provided, comprising a buffer belt for carrying the hard workpiece, a pilot wheel for driving the buffer belt to move, and a drive device for controlling the pilot wheel to rotate, with the buffer belt being made of elastic materials. With the buffer belt made of elastic materials carrying such hard workpieces as glass to be transferred, when the guide device is in contact with the hard workpiece to be transferred, the buffer belt is pressed to deform, which can reduce the pressure produced during the contact of the guide device with the hard workpiece, and prevent the contact portion from being broken or worn because of the pressure, not only preventing loss of the hard workpiece to be transferred, but also reducing use consumption of the guide device, thereby reducing the material cost.