The invention relates to a real-time testing-controlling acceptance system for a deepwater dumping ship. The real-time testing-controlling acceptance system for the deepwater dumping ship comprises the dumping ship, and a set-point dumping device is arranged on the dumping ship and comprises a chute used for restraining dumped stone and a lifting mechanism used for lifting the chute. A rail is laterally arranged on the dumping ship, and the chute can move along the rail and move up and down through the lifting mechanism. A GPS is arranged on the upper portion of the chute, and an underwater testing and controlling device is arranged on the lower portion of the chute. The real-time testing-controlling acceptance system has high adaptability to high-flow-velocity deepwater severe working conditions, has the remarkable effects of the large depth, high precision, high working efficiency, automation and the like, can effectively prolong effective operation time and can be used as reference for design and use of similar engineering testing and controlling systems.