Abstract: Objective To explore the curative effects and safety of Ho/Nd: YAG double wave-length laser surgery in treatment of senior and high risk benign prostate hyperplasia. Methods Ho/Nd: YAG double wave-length laser surgery was used to treat 43 cases of senior and high risk benign prostatic hyperplasia. Preoperative, intraoperative and postoperative follow-up information of these patients were recorded to assess the curative effects and safety of the method. Results All of the 43 cases of surgeries were successful. The operation time was 30~110 (63.37 ± 22.70) min, intraoperative blood loss was 10~100 (45.79 ± 20.51) ml, postoperative catheterization time was 23~48 (25.84 ± 4.82) h, postoperative bladder irrigation time was 10~48 (23.28 ± 6.73) h and postoperative hospitalization stay was 1~2 (1.19 ± 0.39) d. Significant improvements were achieved in IPSS, QOL, Qmax and PVR in postoperative 3~6 months compared with preoperative values (P < 0.05). Postoperative complication rate was low. Conclusions Ho/Nd: YAG double wave-length laser surgery is one of the safe and effect treatments for senior and high risk benign prostatic hyperplasia, with the advantages such as micro bleeding, short catheterization time, short bladder irrigation time and short hospitalization stay, which is worth of further promotion in clinical.