The invention provides a new type accurate regulating device for venous transfusion. The new type accurate regulating device consists of an upper catheter, a reserved tube cap, a reserved tube, a regulating nut, a valve seat hole, a valve seat, a zigzag tube wall, regulating threads, a valve core, a guide support, a Murphy tube and a lower catheter, and is characterized in that the zigzag tube wall of the Murphy tube can be elongated or compressed under the screwing action of the regulating nut and the regulating threads, and drive the valve core in the Murphy tube to move; with the change of the valve core in position on the axis of the lower catheter, the through-flow area of the lower catheter is changed; therefore, the accurate regulation on transfusion velocity is realized; the lower part of the lower catheter is of a U-shaped elbow structure, so that the air can be prevented from entering a transfusion tube, and the transfusion can be automatically stopped. The device has the characteristics of accuracy in dropping speed regulation, automatic exhaust, automatic transfusion stop and the like.