Ｏｂｊｅｃｔｉｖｅ　Comparing the function of the chin-lift mask with laryngeal mask in spontaneous ventilation general anesthesia.　Methods　One hundred patients who performed operations such as herniorrhaphy, genital surgery of women，hysteroscopy and anus hemorrhoids fistula operation were divided into two groups with the random number table method, group M (the chin-lift mask group), group L (laryngeal mask group). MAP, HR, peak inspiratory pressure (PIP), PETCO2 and SpO2 were recorded at different time points: before anesthesia (T0), 1 min before placing the chin-lift mask or laryngeal mask (T1), immediately after placing the chin-lift mask or laryngeal mask (T2), skin incision (T3), pulling out the chin-lift mask or laryngeal mask (T4). At the same time, the complications of postoperative patients were observed.　Results　The chin-lift mask and laryngeal mask were all successful placement in the patients. HR and MAP have no significant difference between different time points in M group, whereas HR and MAP in T2 points are much higher than HR and MAP of T1 and T3 points (P<0.05). HR and MAP in T5 points are much higher than T0 and T4 points(P<0.05) in L group. SpO2, PETCO2, PIP, patients waking up time and the time of improvement Aldrete Scores of 9 have no significant difference between two groups. Patients with bronchospasm and Postoperative sore throat have no significant difference between two groups.　Conclusions　The chin-lift mask which characterized by high successful rate in clinical application and fewer complications post-operation, is a safe and effective respiratory tract management tool used for spontaneous ventilation general anesthesia.