Glass chemical strengthening method, strengthened glass and display device

The invention discloses a glass chemical strengthening method, glass strengthened by the glass chemical strengthening method and a display device.The glass chemical strengthening method comprises the following steps that preheating treatment is conducted on glass to be strengthened, and the preheated glass to be strengthened is placed in first molten salt prepared in advance to be strengthened, the mass concentration of lithium ions in the first fused salt is 10 ppm to 50 ppm; performing cooling treatment on the glass subjected to the strengthening treatment, and performing water soaking treatment on the cooled glass at least twice. According to the scheme, the mass concentration of the lithium ions in the first molten salt is 10-50 ppm, and sodium ions on the surface layer of the glass are replaced by the lithium ions in the glass strengthening treatment process, so that the phenomenon that sodium ions react with carbon dioxide and water to generate sodium carbonate does not exist in a high-temperature and h