Inoue et al.[1] first performed per-oral endoscopic myotomy (POEM) for treatment of Achalasia in 2008, and over the past decade, numerous researches demonstrated that POEM is effective as a treatment for Achalasia. Patients who received laparoscopic Heller's myotomy without fundoplication had more than 50% rate of GERD[10] as the classical Heller's myotomy include a full thickness cut 5 cm above and 2 cm below the gastroesophageal junction. Per-oral endoscopic myotomy not only provides an excellent no-scar approach to perform myotomy; comparing to surgery, POEM allows a more precise dissection of the non-relaxing part of LES while preserving natural antireflux mechanisms around the gastroesophageal junction.