The present invention relates to a foldable capsular vitreous body (FCVB), and its mold design, method for manufacturing, product appearance, and drug delivery property and so on. A mold for molding a foldable artificial vitreous body comprises an upper mold (1), a lower mold (2) and a core (3). The core (3) is disposed between the upper mold (1) and the lower mold (2) and is connected with a drainage-tube pin connected with an injection channel (4). Heating holes (6) are disposed in the upper mold (1) and/or the lower mold (2). Material is injected to the mold and is heated to vulcanize to mold vitreous body. The FCVB is adapted to be injected with any harmless medium and can be used as a delivery vehicle inside or around the eye ball. The size or shape of the FCVB can be changed depending on the different implant site.