This case report describes a baby who received a laparoscopic gastrostomy tube insertion, which was dislodged accidentally at 16(th) postoperative day. After the dislodgement, cutaneous tract rapidly closed, and reinsertion seemed to be impossible. However, gastrostomy tube was reinserted safely with fluoroscopy-guided Seldinger's technique under local anesthesia with sedation. This is the unique method of modified Seldinger's technique for reinsertion of gastrostomy tube under local anesthesia and sedation for accidentally dislodged gastrostomy tube. This method was thought to be safe, easy and useful technique for gastrostomy reinsertion after dislodgement of gastrostomy tube.