Anti-falling central venous catheter without suture

The invention belongs to the technical field of medical apparatus and instruments, and particularly relates to an anti-falling central venous catheter without suture. The anti-falling central venous catheter without suture includes an internal tube and a soft tube; one end of the soft tube is connected to a connection joint; the internal tube is provided with an air bag; and the air bag communicates with the outside environment through an air bag tube. The advantages of the invention are that: the central venous catheter is used for thoracocentesis and abdominocentesis; the air bag is inflated through an air bag connection opening, the air bag swells, the air bag is attached to the inner wall of a puncture surface, the friction force between the internal tube and the puncture surface increases, and then the internal tube cannot fall out of a thoracic cavity and an abdominal cavity; and the central venous catheter can avoid suture and suture removing, is reasonable in a whole design, and is simple in structure