Closed underwater transporting system with precise delivery function

The invention discloses a closed underwater transporting system with a precise delivery function. The closed underwater transporting system comprises an ocean platform, a navigating cable, a transporting cabin, a receiving cabin, a water discharging cabin and an underwater space station. The navigating cable is connected with the ocean platform and the receiving cabin; the transporting cabin moves vertically along the navigating cable; the transporting cabin moves from the ocean platform to the receiving cabin; the navigating cable comprises a first navigating cable body and a second navigating cable body; the first navigating cable body and the second navigating cable body are connected through a connector; the connector is located outside the receiving cabin; and after the receiving cabin is closed, the water discharging cabin discharges water, and the transporting cabin feeds transported materials into the underwater space station. According to the closed underwater transporting system with the precise delivery function, the underwater transporting system with the precise delivery function is constructed based on the underwater space station, the cost is low, and convenience and rapidness are achieved; and targeted delivery of the underwater materials is achieved on the water surface, the transporting system and the receiving system are water-sealed, water-sealed transportation of the materials can be achieved, and separation of the receiving cabin and a ballasting cabin is beneficial for improving working efficiency.