The invention discloses a bent pipe fitting cleaning head comprising a cleaning head body and a connection piece. At least two cleaning rings are arranged on the surface of the cleaning head body at intervals. The surface of each cleaning ring is provided with a groove. Memory alloy rings are embedded in the grooves. The cleaning head body and the cleaning rings are elastic and columnar. The surface of the cleaning head body is provided with water outlet holes. The interior of the cleaning head body is hollow. The connection piece is fixed to one end of the cleaning head body. The back face of the connection piece is provided with a connection rod. The side surface of the connection piece is provided with a water inlet pipe. The water inlet pipe communicates with the interior of the cleaning head body. The bent pipe fitting cleaning head is simple in structure, the diameter of each cleaning ring is identical with the inner diameter of a pipeline, squeezing and friction are continuously conducted in the cleaning process, oil dirt can be thoroughly cleaned, the bent pipe fitting cleaning head is particularly suitable for cleaning the bent pipeline through the elastic structure, and the bent pipe fitting cleaning head is good in cleaning effect, rapid in speed, long in cleaning travel, high in passing capacity and high in applicability.