Molding method of glass substrate

The present invention provides a molding method of a glass substrate, which comprises the following steps: (A1) providing a reinforced glass with upper and lower surfaces respectively comprising a reinforcement layer; (A5) mutually correspondently disposing two protection layers onto the reinforcement layers of the upper and lower surfaces; (A10) thinning the reinforcement layer not disposed with the protection layers by means of a thinning device for the reinforcement layer to make the thickness of the reinforcement layer less than 30 m; (A15) forming the rim by using a cutting tool to cut the reinforced glass from the thinner portion of the thickness of the reinforcement layer; (A20) using a rim etching tool to reinforce the rim; and (A25) removing the protection layers and washing the reinforced glass to form the glass substrate. By means of the abovementioned design, the reinforced glass containing a thicker reinforcement layer can be rapidly molded into the glass substrate, and fracture of the reinforced