The utility model relates to a boiling drying bed tuber pipe drainage device. Including horizontal tuber pipe and drainage device, drainage device connects on horizontal tuber pipe, and wherein drainage device is connected including upper end drain pipe, viewing cup, drain valve, lower extreme drain pipe, the one end and the horizontal tuber pipe of upper end drain pipe, and the other end of upper end drain pipe links to each other with viewing cup 's one end, and viewing cup 's the other end links to each other with the water inlet of drain valve, and the delivery port of drain valve links to each other with the lower extreme drain pipe. The utility model discloses increase on horizontal tuber pipe and deposit water, observation, water drain structure, can realize that in time the discovery is intake, allow temporarily to store on a small quantity to intake, the water that lets into no longer continues past equipment the inside stream, increase the drainage function, avoid polluting the product. The utility model relates to a design benefit, excellent performance, convenient and practical's boiling drying bed tuber pipe drainage device.