Liquid transfer pipe

The utility model discloses a liquid transfer tube which comprises a tubular suction tube body, a liquid suction port is arranged at the front end of the suction tube body, and the liquid transfer tube is characterized in that a rubber head made of an elastic material is arranged at the rear end of the suction tube body, an inner cavity is arranged inside the rubber head, an air outlet communicated with the inner cavity is arranged at one end of the rubber head, and the liquid suction port is communicated with the air outlet. The air outlet is communicated with the rear end of the straw body in a detachable mode, the rubber head has a compressed state after being extruded by external force and a reset state after being reset, and an adjusting mechanism used for changing the volume of an inner cavity when the rubber head is in the reset state is arranged on the rubber head. The utility model provides a special liquid transfer tube for sucking seminal fluid, which can adjust the volume of a rubber head on the l