Water outlet device of coffee machine and operation method thereof

The invention relates to a water outlet device of a coffee machine and an operation method of the water outlet device. The water outlet device of the coffee machine comprises a water outlet pipe connected with a water tank, and a water outlet of the water outlet pipe is connected with a two-inlet two-outlet water diversion mechanism. The water diversion mechanism comprises a water passing shaft sleeve and a water diversion shaft which is inserted in the water passing shaft sleeve in a sliding and sleeved mode, and a first water inlet hole, a first water outlet hole, a second water inlet hole and a second water outlet hole are respectively formed in the lateral wall of the water passing shaft sleeve. A first boss, a first blocking device, a second boss and a second blocking device are arranged on the water diversion shaft, wherein the first boss is used for separating a communication channel between the first water inlet hole and the first water outlet hole, the first blocking device is used for being communic