A method for manufacturing tempered vacuum glass, wherein an air extraction opening is provided, in advance, on at least one glass substrate for constituting the tempered vacuum glass, and the manufacturing method comprises the following steps: preparing a metalized layer in a to-be-sealed region on the glass substrate, and tempering or heat-reinforcing the glass substrates; placing a metal solder on the metalized layer; preheating and superposing the glass substrates, by one of the following methods: a. respectively heating the two glass substrates to 60°C to 150°C, disposing the metalized layers of the to-be-sealed regions of the two glass substrates opposite to each other, and superposing the glass substrates such that the metal solder is located between the metalized layers of the to-be-sealed regions; and b. disposing the metalized layers of the to-be-sealed regions of the two glass substrates opposite to each other, superposing the glass substrates such that the metal solder is located between the metalized layers of the to-be-sealed regions, and integrally heating the two superposed glass substrates to 60°C to 150°C; hermetically sealing the to-be-sealed regions by a metal brazing process to form a tempered glass assembly, wherein the metal brazing process is adopted to perform local heating on the to-be-sealed region, wherein the heating mode is laser heating, flame heating, current heating, induction heating, microwave heating, radiation heating or convection heating; heating the tempered glass assembly to 100°C to 230°C; vacuumizing an inner cavity of the tempered glass assembly to a predetermined vacuum degree; and closing the air extraction opening and completing the manufacturing process of the vacuum glass. preparing a metalized layer in a to-be-sealed region on the glass substrate, and tempering or heat-reinforcing the glass substrates; placing a metal solder on the metalized layer; preheating and superposing the glass substrates, by one of the following methods: a. respectively heating the two glass substrates to 60°C to 150°C, disposing the metalized layers of the to-be-sealed regions of the two glass substrates opposite to each other, and superposing the glass substrates such that the metal solder is located between the metalized layers of the to-be-sealed regions; and b. disposing the metalized layers of the to-be-sealed regions of the two glass substrates opposite to each other, superposing the glass substrates such that the metal solder is located between the metalized layers of the to-be-sealed regions, and integrally heating the two superposed glass substrates to 60°C to 150°C; a. respectively heating the two glass substrates to 60°C to 150°C, disposing the metalized layers of the to-be-sealed regions of the two glass substrates opposite to each other, and superposing the glass substrates such that the metal solder is located between the metalized layers of the to-be-sealed regions; and b. disposing the metalized layers of the to-be-sealed regions of the two glass substrates opposite to each other, superposing the glass substrates such that the metal solder is located between the metalized layers of the to-be-sealed regions, and integrally heating the two superposed glass substrates to 60°C to 150°C; hermetically sealing the to-be-sealed regions by a metal brazing process to form a tempered glass assembly, wherein the metal brazing process is adopted to perform local heating on the to-be-sealed region, wherein the heating mode is laser heating, flame heating, current heating, induction heating, microwave heating, radiation heating or convection heating; heating the tempered glass assembly to 100°C to 230°C; vacuumizing an inner cavity of the tempered glass assembly to a predetermined vacuum degree; and closing the air extraction opening and completing the manufacturing process of the vacuum glass.