An anti-overflow pipe, comprising a pipe wall and a valve; on a plane perpendicular to the lengthwise direction of the pipe wall, the cross-section of the inner side wall of the pipe wall is oval, and the cross-section of the outer side wall of the pipe wall has a closed ring shape; in a plane where the major axis of the elliptical shape of the inner side wall and the lengthwise direction of the pipe wall are located, the cross-section of the valve is in a V-shaped structure and the valve is connected with the inner side wall, and the valve is provided with a slit for unidirectionally conducting fluid. The valve with a V-shaped structure is provided on the pipe wall having an oval cross-section, so that the fluid is sucked out under the action of suction, preventing waste of fluid, and scalding and wetting of a user, ensuring personal safety of a user.