The invention discloses a rapid manufacturing and forming integrated device for an annular gasket. The rapid manufacturing and forming integrated device comprises a rapid manufacturing device and a cooling device. According to the rapid manufacturing device, a gasket die is arranged at the end portion of the bottom of a vertical plate, and the edge of the gasket die is hinged to the bottom of the vertical plate; and a plastic nozzle is arranged on one side of the vertical plate, and an ejecting mechanism is arranged on the other side of the vertical plate. The cooling device comprises a cooling water groove formed in a winding manner. The cooling water groove is internally provided with a water outlet and a water inlet which communicate with each other through a circulation pipeline. Compared with the prior art, the rapid manufacturing device and the cooling device are used in cooperation, the gasket die is in a to-be-injected plastic state under the action of the elasticity of a torsional spring, and under the traction of a pull rope, the gasket die moves towards protrusions on a fixing ring after plastic injection; and the plastic gasket is thrown into the cooling water groove, and the plastic gasket is gradually collected from the tail end of the cooling water groove in a unified manner under constantly cyclic flushing driving of cooling liquid in the cooling water groove.