To make paying out/returning of a washing hose well and to realize rotating/driving and paying out/returning of the washing hose by one motor.

The in-pipe washing device is constituted such that it is provided with a reel 3 for winding the washing hose 1 by an outer peripheral surface 3a; a frame body 4 for rotatably supporting the reel 3; a frame 5 for rotatably supporting the frame body 4; a motor 6 provided on the frame 5 and rotating/driving the frame body 4 relative to the frame 5; and a clutch means 7 for transmitting rotation of the frame body 4 relative to the frame 5 to a reel rotation shaft 31 provided on a rotation center part of the reel 3.