The invention discloses a processing method of chemically toughened glass, which comprises the following steps: adding solid potassium nitrate into a reinforcing furnace, hermetically firing at 340-400 DEG C for 67-78 hours to obtain a potassium nitrate liquid, adding silicic acid, stirring every half hour for 3-5 hours, immersing chemically toughened glass into the potassium nitrate solution, and carrying out ion-exchange reaction at 370-440 DEG C. The method disclosed by the invention keeps the chemically toughened glass smooth and enhances the impact height.