The invention discloses a bidirectional bleeding stopping and liquid stopping safety device. The device comprises an inner conical connector, an outer conical connector, two sealing sheets and a connection
pipe, wherein the two sealing sheets are arranged in the inner conical connector and the outer conical connector, and the connection
pipe is detachably inserted into the inner conical connectorand the outer conical connector. One end of the inner conical connector is connected to a terminal connector of an
infusion set, and the outer conical connector at the other end is connected to a venous transfusion needle or an indwelling needle. When an accident happens during transfusion, a pipeline is pulled, the outer conical connector and the inner conical connector of the bidirectional bleeding stopping and liquid stopping safety device are separated after bearing pulling force in opposite directions, and at the time, the inner conical connector pulls the connection
pipe for separation together. When the connection pipe is separated to the limiting portion of the outer conical connector, the connection pipe is separated from the sealing sheet of the outer conical connector, the sealing sheet is closed, and the outer conical connector is closed. When the pipeline continues to be pulled, the connection pipe is separated from the sealing sheet in the inner conical connector, the sealing sheet is closed, and the inner conical connector is closed. Bleeding stopping of a patient is achieved, and liquid stopping of a transfusion terminal is achieved.