A mould for moulding a foldable artificial vitreous body comprises an upper mould (1), a lower mould (2) and a core (3). The core (3) is disposed between the upper mould (1) and the lower mould (2) and is connected with a drainage-tube pin connected with an injection channel (4). Heating holes (6) are disposed in the upper mould (1) and/or the lower mould (2). Material is injected to the mould and is heated to vulcanize to mould the vitreous body. The vitreous body is mainly composed of a balloon, a drainage tube and a drainage valve, wherein the inlet and the outlet of the drainage tube are respectively connected to the balloon and the drainage valve, and concave structures are provided on the balloon.
