Abstract:Objective To compare the clinical efficacy of peroral endoscopic myotomy (POEM) with the modified method using thermal biopsy forceps and the traditional method using triangular knife in treatment of achalasia.Methods A prospective study included 64 patients with achalasia who underwent POEM treatment from February 2017 to February 2022. They were randomly divided into the thermal biopsy forceps group and the traditional method group which there were 32 cases in each group, POEM was performed respectively. The length of myotomy and tunnel, postoperative hospital stay, hospitalization cost, operation time and complications were recorded and compared.Results The operation was successfully completed in both groups. There were no significant differences in the length of surgical myotomy, tunnel length, gas-related adverse events, hospital stay, gastroesophageal reflux rate 6 months after surgery and Eckardt score at 3 months after operation between the two groups (P > 0.05). There were significant differences in intraoperative bleeding, operation time, hospitalization cost and Eckardt score at 6 months after operation (P < 0.05).Conclusion Both the thermal biopsy forceps method and the traditional method can effectively treat achalasia, but the thermal biopsy forceps method can effectively shorten the operation time, reduce intraoperative bleeding, and reduce hospitalization cost, and the long-term effect may be more significant, especially suitable for promotion in clinical institutions with limited technical expertise.