Mucosal perforation/injury during pyloromyotomy is a rare Laundry Package and frantic complication.The classical technique of repair is a full-thickness approximation (both mucosal repair and serosal repair) and re-pyloromyotomy at the opposite site.Alternatively, the simple primary mucosal repair is also reported.Such mucosal injury can be repaired with Hayward Elite Light Parts equal efficacy using both the classical full-thickness repair and pyloric rotation and primary closure technique in terms of complications and outcome.Here, we describe three cases of iatrogenic mucosal injury, which were treated successfully by full-thickness repair in two cases and one case with a primary mucosal repair.