The present invention discloses a button switch outlet mechanism, which is provided with a body communicating with the water source and in which at least two water passages are arranged, wherein, it is further provided with a switch unit and a water division unit mounted in the body, the switch unit comprises at least two switch buttons that are arranged to the control poles of the switch buttons and a limiting assembly respectively, the limiting assembly controls that one of the switch button is pressed or all the switch buttons are pressed simultaneously and located to the limiting plate; the water division unit is connected to the switch unit to control that the water passages are communicated with the water source respectively or simultaneously. The cooperation of the components of the present outlet mechanism is tight and artistic with effective and stable switch.