Abstract: Objective To explore the application value of single-port robotic surgery in infant urological surgery by using the Da Vinci Xi system.Methods From August 2020 to October 2022,18 infants who underwent single-port robotic surgery in our center with at least 6 months’ follow-up were selected.11 cases completed pyeloplasty,including 1 case of bilateral pyeloplasty;3 cases underwent uretero-ureteral anastomosis;1 case followed Lich-Gregoir technique;2 cases underwent nephrectomy of renal hypoplasia;1 case underwent capsulectomy of the prostate;9 in 18 cases were combined with patent processus vaginalis,including 3 cases with bilateral patent processus vaginalis;The operating experience and follow-up treatment effect were analyzed.Results All 18 children successfully completed the operation without converting to laparotomy through a single incision under the umbilicus;the postoperative hospital stay was （7.9±3.8 ）days,and the postoperative follow-up was （16.3±8.6 ）months.1 case occurred anastomotic leakage after the operation,and it was cured after the drainage tube was used for 9 days;1 case developed urinary tract infection 2 weeks after the operation,and was cured after taking antibiotics without recrudescence;there was no mid-and-long-term complications;the surgical incision healed well,and there were no complications such as infection,scar proliferation or incisional hernia.Postoperative appearance satisfaction was great.Conclusion It is feasible to perform urological surgery on infants through single-port robotic technology using the Da Vinci Xi system.Although it exists certain technical difficulties in application,it can bring better minimally invasive experience and cosmetic effect for infants.

Key words: single-port robotic surgery, infants, pyeloplasty, uretero-ureteral anastomosis, cyst of prostate