A production method of multiple panes comprising: hermetically bonding, with a hermetically-bonding member, peripheries of paired glass panels (2, 3) disposed facing each other at a predetermined distance to form a space to be hermetically enclosed between the glass panels (2, 3); evacuating air from the space through an outlet to make the space be in a reduced-pressure state; and dividing, after the space is made be in the reduced-pressure state, the space by a region forming member into an outlet region including the outlet and a reduced-pressure region other than the outlet region, wherein: the region forming member is formed on a front surface of one of the glass panels (2, 3); the region forming member includes an air passage (5a; 5d; 5f) interconnecting the outlet region and the reduced-pressure region under a condition where the space is formed; after the space is made be in the reduced-pressure state, the space is divided into the outlet region and the reduced-pressure region by closing the air passage (5a; 5d; 5f); the method characterised in that ends of the region forming member are connected to the hermetically-bonding member so as to surround the outlet together with the hermetically-bonding member; and the hermetically-bonding member and the region forming member are made by use of the same low-melting glass frit. hermetically bonding, with a hermetically-bonding member, peripheries of paired glass panels (2, 3) disposed facing each other at a predetermined distance to form a space to be hermetically enclosed between the glass panels (2, 3); evacuating air from the space through an outlet to make the space be in a reduced-pressure state; and dividing, after the space is made be in the reduced-pressure state, the space by a region forming member into an outlet region including the outlet and a reduced-pressure region other than the outlet region, wherein: the region forming member is formed on a front surface of one of the glass panels (2, 3); the region forming member includes an air passage (5a; 5d; 5f) interconnecting the outlet region and the reduced-pressure region under a condition where the space is formed; after the space is made be in the reduced-pressure state, the space is divided into the outlet region and the reduced-pressure region by closing the air passage (5a; 5d; 5f); the method characterised in that ends of the region forming member are connected to the hermetically-bonding member so as to surround the outlet together with the hermetically-bonding member; and the hermetically-bonding member and the region forming member are made by use of the same low-melting glass frit. the region forming member is formed on a front surface of one of the glass panels (2, 3); the region forming member includes an air passage (5a; 5d; 5f) interconnecting the outlet region and the reduced-pressure region under a condition where the space is formed; after the space is made be in the reduced-pressure state, the space is divided into the outlet region and the reduced-pressure region by closing the air passage (5a; 5d; 5f); the method characterised in that ends of the region forming member are connected to the hermetically-bonding member so as to surround the outlet together with the hermetically-bonding member; and the hermetically-bonding member and the region forming member are made by use of the same low-melting glass frit.