Objective To analyze the effect of clinical application of transumbilical single-pore laparoscopic cholecystectomy with modified instruments and conventional instruments. Methods Fifty transumbilical single-pore laparoscopic cholecystectomy patients with conventional instruments (conventional instruments group) and 50 transumbilical single-pore laparoscopic cholecystectomy patients with modified instruments (modified instruments group) were selected. The operation time, recovery satisfaction degree of navel incision, intraoperative bleeding, postoperative complication, change rate of surgical procedure, length of hospital stay and hospitalization expenses were compared between 2 groups. Results The operation time and change rate of surgical procedure in modified instruments were significantly lower than those in conventional instruments, and the recovery satisfaction degree of navel incision was significantly higher than that in conventional instruments:(43.5 ± 12.0) min vs. (60.0 ± 2.2) min, 2.0% (1/50) vs. 12.0% (6/50) and (4.5 ± 0.2) scores vs. (3.2 ± 1.2) scores, and there were statistical differences (P<0.05). There were no statistical differences in intraoperative bleeding, postoperative complication, length of hospital stay and hospitalization expenses between 2 groups (P>0.05). Conclusions The transumbilical single-pore laparoscopic cholecystectomy with modified instruments can obviously reduce the operation time and the change rate of surgical procedure, improve the recovery satisfaction degree of navel incision, reduce the operation difficulty of performer and shorten the time of learning curve.