A glass forming apparatus comprising: a transfer unit which moves a glass planar material (10, 20); a preheating unit which preheats the material (10, 20) supplied by the transfer unit; a curved surface forming unit which forms the material (10, 20) in a curved shape; and a cooling unit which cools the material in the curved shape transformed by the curved surface forming unit, wherein the curved surface forming unit includes: a moving mold in which a plurality of curved surface-shaped cores configured to seat the preheated material (10, 20) are formed, wherein the moving mold is provided to be movable; a first mold disposed to face the moving mold; a plurality of cavities formed between the moving mold and the first mold; and a pneumatic device which generates a vacuum pressure in the plurality of cavities to adhere the material (10, 20) to the curved surface-shaped cores, characterized in that said curved surface forming unit comprises a plurality of steps (AF2, AF3, AF 4), each step comprising: a one of said first mold, said first mold being provided above the moving mold to be vertically movable, and a second mold provided under the moving mold from which a lower portion of the moving mold is separated, so that the moving mold is movable, said first and second molds (310, 320) provided to raise a temperature of the moving mold gradually to a forming temperature in said plurality of steps, wherein the pneumatic device includes: a vacuum pump; a surge tank connected with the vacuum pump; and a suction path provided to connect the surge tank and the plurality of cavities, and wherein the suction path includes: a first suction path formed in the moving mold; and a second suction path which connects the first suction path and the surge tank, wherein at least a part of the second suction path is formed in the second mold. a transfer unit which moves a glass planar material (10, 20); a preheating unit which preheats the material (10, 20) supplied by the transfer unit; a curved surface forming unit which forms the material (10, 20) in a curved shape; and a cooling unit which cools the material in the curved shape transformed by the curved surface forming unit, wherein the curved surface forming unit includes: a moving mold in which a plurality of curved surface-shaped cores configured to seat the preheated material (10, 20) are formed, wherein the moving mold is provided to be movable; a first mold disposed to face the moving mold; a plurality of cavities formed between the moving mold and the first mold; and a pneumatic device which generates a vacuum pressure in the plurality of cavities to adhere the material (10, 20) to the curved surface-shaped cores, a moving mold in which a plurality of curved surface-shaped cores configured to seat the preheated material (10, 20) are formed, wherein the moving mold is provided to be movable; a first mold disposed to face the moving mold; a plurality of cavities formed between the moving mold and the first mold; and a pneumatic device which generates a vacuum pressure in the plurality of cavities to adhere the material (10, 20) to the curved surface-shaped cores, characterized in that said curved surface forming unit comprises a plurality of steps (AF2, AF3, AF 4), each step comprising: a one of said first mold, said first mold being provided above the moving mold to be vertically movable, and a second mold provided under the moving mold from which a lower portion of the moving mold is separated, so that the moving mold is movable, a one of said first mold, said first mold being provided above the moving mold to be vertically movable, and a second mold provided under the moving mold from which a lower portion of the moving mold is separated, so that the moving mold is movable, said first and second molds (310, 320) provided to raise a temperature of the moving mold gradually to a forming temperature in said plurality of steps, wherein the pneumatic device includes: a vacuum pump; a surge tank connected with the vacuum pump; and a suction path provided to connect the surge tank and the plurality of cavities, and wherein the suction path includes: a first suction path formed in the moving mold; and a second suction path which connects the first suction path and the surge tank, wherein at least a part of the second suction path is formed in the second mold. a vacuum pump; a surge tank connected with the vacuum pump; and a suction path provided to connect the surge tank and the plurality of cavities, and wherein the suction path includes: a first suction path formed in the moving mold; and a second suction path which connects the first suction path and the surge tank, wherein at least a part of the second suction path is formed in the second mold. a first suction path formed in the moving mold; and a second suction path which connects the first suction path and the surge tank, wherein at least a part of the second suction path is formed in the second mold.