Abstract: Objective:To observe the hemody namic influence by rT and co 2 on Laparoscopic Cholecystectomy under general anesthesia,30 cases were studied.Methods:Hemodynamic parameters(HR、SV、CO、CI、SpO 2)were measured with monitor Datex and TECO 2 during the operating.The data were recorded after the patients being placed to rT position,CO 2 being insufflated into peritoneal cavity and the operation being done.Results:MAP、HR、SV、CO、CI were significantly reduced after rT position.Then,those were significantly increased after CO 2 peritoneal insufflation,but SV had no significant change.These changes would be disadvantageous to the old or heart disease patients.Conclusion:Monitor treatment should be paid to the patients,though Laparoscope Cholecystectomy has minor tramun and disturbence to the patient.