A showerhead with a rotationally adjustable handle includes a handle unit, a water outlet head unit, and a water inlet control unit. The handle unit has a hollow structure therein and has a first, a second, and a third communicating pipe penetrating therethrough. The water outlet head unit has a cover cap and an outlet valve assembly. The cover cap is connected to a first end of the handle unit and provided with an accommodating space for accommodating the outlet valve assembly. The outlet valve assembly is connected to one ends of the first, the second, and the third communicating pipe. The water inlet control unit is connected to a second end of the handle unit and is rotated to control a water inlet state among a plurality of stages, such that a water flow is guided into any one or a combination of any two of the communicating pipes.