Abstract: A showerhead assembly includes a water adapter and a water flow diverter. The water adapter includes two rotatable frames having a first water outlet and a second water inlet respectively and a supporting frame, having a first water inlet communicating with the first water outlet and a second water outlet, rotatably coupled between the rotatable frames. The water flow diverter contains a first water opening communicating with the first water outlet, a second water opening communicating with the second water inlet, and a water exit. The water flow diverter is adapted for selectively controlling the water flow at one of the conditions including the water flowing out at the second water outlet only, the water flowing out at the water exit only, and the water flowing out at both the second water outlet and the water exit at the same time.