Abstract: Disposable infusion tube is essential for the medical industry,which is the device of intravenous infusion for the patient.The quality detecting of ventilating and leaking is an important part of the Production process.Through research,it has been found that most detecting is manual in our country and automatic detection devices are few,thus the production efficiency is low.A kind of automatic detection device based on PLC controlled has been designed.After testing,the results show that it can achieve automatic detection.Compared with the manual detecting,the efficiency and reliability of quality detecting greatly improve.