The utility model discloses a pressure -bearing container, this pressure -bearing container include that the container wall is located with passing through -hole on the container wall and inserting branch pipe in the pressure -bearing container, wherein, pressure -bearing container still including set up in outer one -level component and the second grade component of pressure -bearing container, just through -hole, one -level component and second grade component communicate the confined passageway that forms the plug of confession branch pipe in proper order, the one -level component can be opened and close the passageway, the second grade component can be right the outer wall of branch pipe seals. Through the cooperation of one -level member and second grade member, when the branch pipe that will wait to change was extracted and is withdrawed from the one -level member and stop in the second grade member with encapsulated situation from the pressure -bearing container, operation one -level member closed the closed walk, will wait the branch pipe of changing again and extract from the second grade member, makes the branch pipe change under the circumstances that does not influence the normal work of pressure -bearing container to reduce the safe risk of maintaining the change work degree of difficulty and engineering operation.