The invention discloses a method for increasing the compressive strength of cut toughened glass, characterized by corroding the edge of the cut toughened glass through using a chemical corrosive agent, wherein, the chemical corrosive agent is a hydrofluoric acid solution. According to the invention, by processing the cut edge of the cut toughened (tempered) glass through chemical corrosion, the glass edge defect point (point breakage, edge breakage) is narrowed down from 0.05 mm to less than 0.01 mm, the edge sawtooth turns into smooth, the edge appearance turns into uniform regular crystals from irregular serration, thus the microstructure of the toughened glass edge is changed, the crushing stress thin spots are eliminated, the consistency of the compressive strength is achieved, and the glass strength reaches more than 350 MPa. By adopting the method of chemically corroding the edge of the cut toughened glass to increase the compressive strength, the advantages of realization of sheet process, high efficiency, greatly reduced operation staff, and high yield rate are achieved, thus the invention has huge advantages of production cost, and realizes the sheet process of the toughened (tempered) glass.