#$%^&*AU2012101831A420130117.pdf#####ABSTRACT OF DISCLOSURE A joint of sputum suction tube includes a patient tube (100), an exhaust tube (200) and a sleeve (300). The sleeve (300) includes a rotatable end (310) and a fixed end (320). The rotatable end (310) rotatably joints the exhaust tube (200). The fixed end (320) fixedly joints the exhaust 5 tube (200). Therefore, the patient tube (100) rotatably connects with the exhaust tube (200) by the sleeve (300). 8400 320 330 310 Q 500 200 FIG.1