The present utility model provides a new pipe with anti-falling inner lining plastic, including a mother tube, a child tube and a clamp. The mother tube and the child tube both include an inner lining tube and an outer connecting tube. The outer surface of the inner lining tube is provided with a spiral projection, and one end of the inner lining tube is provided with an outer scroll edge. The inner surface of the outer connecting tube is provided with a spiral groove corresponding to the spiral projection of the inner lining tube. The inner lining tube is connected to the inner surface of the outer connecting tube through the spiral projection, and the outer connecting tube has a projection at one end. The two ends of the outer connecting tube are connected through the clamp and the sealing ring is provided on the mating surface of the projection. The clamp includes the first body, the second body, the pin, the tightening rod and the tightening bolt. The utility model achieves the effect of preventing the inner lining tube from falling off, and realizes the simple and reliable installation of the inner lining tube.