To provide a drain pipe with a cleaning hole capable of reducing a manufacturing cost.

The drain pipe has a main pipe 11, a branch pipe 12, a cover 13 and two joint members 14. The main pipe 11 and the branch pipe 12 are composed of the transparent quality of the material. The branch pipe 12 is made to communicate with the main pipe 11 and projected and mounted on the side face of the main pipe. The cover 13 is installed detachably to the branch pipe 12 so as to close the opening 12a of the branch pipe 12. Each joint member 14 detachably connect both ends of the main pipe 11 at the end sections of the drain pipe 1, and is secured rotatably centering around the central axis of the main pipe 11 as the main pipe 11 is left as it is supported when each joint member is loosened.