To provide a two-wheel type automatic rotary washing apparatus which smoothly and efficiently jets fluid and has high washing efficiency.

The washing apparatus is provided with jetting parts 1 at both sides of an apparatus main body 2 having a chamber 20 into which the fluid is supplied and the fluid is jetted from the jetting parts 1. A rotary body 21 is provided which is installed in and rotatably supported in the chamber 20 and both ends of the rotary body are coupled to the jetting parts 1 respectively. The jetting parts 1 and the rotary body 21 rotate by reaction force of the fluid jetted from the jetting parts 1. The washing apparatus has a fluid guiding means (a guide blade 27) rotating around a shaft of the rotary body 21 and the fluid in the chamber 20 is guided and fed to the jetting parts 1 by the rotation of the fluid guiding means in the chamber 20.