Abstract: A quick-fit self-priming drain pipe, comprises at least two pipes and at least a joint pipe for connecting several pipes. The surface of the pipe is surrounded with several endlong extended slots in the axial direction of the pipe. From the end face of the pipe, the slot comprises a trench hole and a slot opening from inside to outside. The outer surface at the end of the pipe is surrounded with several locating holes. The joint pipe has at least two through holes corresponding to one end of pipe, and its inner surface is surrounded with several locating pieces corresponding to the locating holes. Hereby, the construction operation is simplified, and the working efficiency and draining efficiency are increased greatly.