Objective To reduce the restlessness caused by urinary catheter during postoperative recovery from anesthesia for the procedure of thoracoscopic wedge resection of the lung under general anesthesia. Methods Totally， 182 patients were to receive thoracoscopic wedge resection of the lung under general anesthesia were evenly randomized into an intervention group(without urinary catheter placement), and a control group (with urinary catheter placement). The outcomes of the two groups, including the number of cases of restlessness during postoperative recovery from anesthesia, the time to restore original urination after operation, the incidence rates of bladder irritation and urinary retention, were compared.Results The intervention group took shorter time to restore original urination after operation, and had lower incidence rate of restlessness during postoperative recovery from anesthesia and rate of bladder irritation signs, than the control group（P<0.05，P<0.01）. The incidence rate of urinary retention had no significant difference between the 2 groups（P>0.05）. Conclusion Thoracoscopic wedge resection of the lung under general anesthesia without urinary catheter placement didn't increase the incidence rate of postoperative urinary retention. Instead, the practice boosted restoration of original urination after operation, and significantly lower the incidence rate of restlessness during postoperative recovery from anesthesia and the rate of bladder irritation signs.