Safe button switch of water drinking device

The invention discloses a safe button switch of a water drinking device. The safe button switch comprises a button component, a self-locking component and a microswitch, wherein the button component comprises a slide block spring, a slide block, a button, a slide block base, a button spring and a guide sleeve base; the self-locking component comprises a guide sleeve, a rotation shaft, a pin shaft, a lift spring, fixed screws and a base; the microswitch is installed on the base and is provided with a swing rod, and the swing rod is in inward contact with a steering rib of the rotation shaft; at the self-locking state of the rotation shaft, the steering rib applies force to the swing rod, and the microswitch is closed under the effect of swing rod; at the free state of the rotation shaft, the steering rib leaves away from the swing rod, so that the force of the swing rod to the microswitch disappears, and the microswitch is cut off. The safe button switch of the water drinking device has the self-locking function, thus solving the problem that when a button mechanism of the existing water drinking device operates, and a button moves by pressing under the condition of locking, the switch is conducted before the button does enters the self-locking state.