Pressure filling capping 3-in-1 unit machine integrates washing, filling and capping into one unit, which can be used for different kinds of fruit juices, tea hot drink production. With only a few parts changed, the machine can also be used for mineral water filling. The advanced micro-negative pressure filling technology is used in this machine. The filling is quick, steady and accurate. The beverage feedback system is well designed, the gas can be fed back separately, has no contact with beverage, reduce the second time pollution and oxidation.