The present invention provides an improved structure of a sputum suction tube, which includes: a sputum suction tube. The system includes: a connecting seat, the connecting seat is a hollow round tube with a joint at one end, and the joint of the connecting seat is connected to the suction machine And a tube, the tube is hollow inside, the tube is fixed on the other end of the connecting seat； a anti-bacterial cover, the anti-bacterial cover is made of transparent soft plastic material, the periphery is sealed, and corresponds to the length of the catheter, the antibacterial The sleeve is sealed to fix the other end of the connecting seat and wrap the catheter； thereby, the sputum suction tube can be taken out directly after the packaging bag is opened, which achieves convenience in use and hygiene and safety.本發明提供一種抽痰管結構改良，包含：一抽痰管本體係包含：一連接座，該連接座為一中空圓管體一端設有一接合口，該連接座的接合口接於抽痰機上；以及一導管，該導管內部為中空，該導管結合固定該連接座另一端上；一防菌套，該防菌套為透明軟性塑料材質周緣皆密封，且對應該導管長度，該防菌套以密封結合固定該連接座另一端上並將該導管包覆；藉此，拆開包裝袋後能直接將抽痰管拿出，達到使用上的方便性及衛生安全。
