The invention generally describes a beverage dispenser, comprising a beverage supply source, a beverage dispensing outlet, a filter element used for filtering the beverage; a removable source beverage box of which the bottom is equipped with an opening; wherein the opening is correlated with a valve, and the valve can seal the opening automatically after removing the source beverage box; a filter beverage storing box, and a flow system leading to the outlet from the source beverage box via the valve and the filter element placed in the flow system.