Beverage cup cover structure of beverage preparation device

The utility model discloses a beverage cup cover structure of a beverage preparation device, which comprises a cup cover, a cup inner cover, a key switch plate, a liquid inlet channel and a liquid outlet channel, the liquid inlet channel is provided with a water leakage valve, and the key switch plate drives a first valve to open or close the liquid outlet channel. The cup is characterized in that the cup inner cover is provided with a liquid inlet exhaust port and a liquid outlet exhaust port, the liquid outlet exhaust port is provided with a second valve, the key switch plate drives the first valve to be opened and drives the second valve to be opened at the same time, and the second valve is far away from the first valve. When the beverage pot is taken out of the beverage preparation device and needs to pour out beverage, the first valve opens the liquid outlet channel and the liquid outlet exhaust port at the same time, so that the beverage pot can pour out the beverage smoothly, and the cup cover is comp