PROBLEM TO BE SOLVED: To provide an insertion acid for a gastrostomy tube capable of surely maintaining a preferable holding state of a bumper part, without providing a reinforcement member on the bumper part, and capable of making insertion operation of the gastrostomy tube into a gastrostomy extremely smoothly.SOLUTION: An insertion acid for a gastrostomy tube comprises a holding rod 2 for holding a bowl-shaped bumper part 11 disposed on a gastrostomy tube 9 on a front end part, and an extending rod 6 extending forward of the bumper part 11 held by the holding rod 2. The extending rod 6 is coupled to one side of the holding rod via a connection member 5.
