A water outlet valve core of a wall mounted shower head and a water output device each includes an inlet, two outlets, an annular channel, and a flow channel. Water enters the water outlet valve core through the inlet, and most of the water passes through the flow channel and flows out of the outlets. The remaining water passing through the flow channel then enters the annular channel, and is mixed with the most of the water out of the flow channel to flow out of the outlets. Based on concepts of jet switching within a same element, strong water flow and weak water flow switch alternatively to implement the effect of hydro massage, such that conventional rotor-type shower heads wont be easily stuck or worn out to cause loss of massage functions.
