Urinary stone disease (USD) has become a significant health issue worldwide and current open surgeries are rendered less satisfactory due to their impairments on the appearance of patients. Laparoendoscopic single-site surgery (LESS) is a technique capable of improving the cosmetic characteristics of open surgeries. In the current study, we applied an improved LESS method during the operation of ureterolithotomy or pyelolithotomy. 45 (53 sides) USD patients receiving ureterolithotomy or pyelolithotomy with LESS between May 2014 and June 2016 in Urology Surgery of the First People Hospital of Yunnan Province were included. The LESS technique was improved by cutting the length of trocar into 8 cm. Moreover, the inserting operation of Double-J (D-J) stent and incision suture were also modified in the current study to simplify the operation and to save the surgery time. Based on the analysis, ureterolithotomy or pyelolithotomy with LESS was successfully performed with all the patients. The average surgery duration was 97 min and the average intraoperative blood loss was 15 mL. The results showed that hydronephrosis was attenuated in all the patients and no ureterostenosis was recorded. The average Vancouver scar scale score of the incisions was 2.3 and no severe side effect was observed for patients in the cohort during the follow-up as long as 12 months. With the improvements on the one-port device, D-J stent insertion, and incision suture, the USD patients showed considerable recovery and satisfactory cosmesis without severe side effects after the surgeries.