Beverage supplier with emptying and cooling functions

A beverage supplier includes: an inlet conduit communicated with a beverage container; a pumping and cooling device communicated with the inlet conduit, pumping and cooling a beverage from the beverage container, and outputting a cooled beverage; and an output unit, which is electrically connected to the pumping and cooling device and controls output of the cooled beverage. In a first state, the pumping and cooling device pumps and cools the beverage from the beverage container through the inlet conduit. In a second state, the pumping and cooling device empties the cooled beverage remained in the pumping and cooling device.