Sterile packaging device and method thereof

The invention discloses a sterile packaging device which comprises a frame, wherein a conveying belt is mounted in the frame through a transmission roller, and a first motor for driving the transmission roller to rotate is mounted on the frame. According to the device, after a filling bottle is conveyed on a conveying belt and fixed by a clamping piece, under the action of a second motor, a first belt, a second belt and a third belt, a transmission shaft rotates; and meanwhile, a connecting frame lifts a blocking piece; under the action of a second push rod, the filling bottle is pushed to the top of a moving table, and after the transmission shaft is reset, the two sides of the box body are blocked again through blocking pieces; in the process that nitrogen is conveyed into the box body, air is exhausted outwards through one-way valves, a sterile environment is created, ultraviolet sterilization lamps stretch into the filling bottles to conduct sterilization treatment on the interiors of the filling bottles,