Positive pressure air purification protection cover and method

The invention discloses a positive pressure air purification protection cover and method. The positive pressure air purification protection cover is characterized in that a positive pressure air curtain pipeline and an air suction pipeline are included, the positive pressure air curtain pipeline is on the forehead part of a human face, and discharges air with a certain pressure to form an air curtain, and the air curtain constructs an isolation belt in front of the human face to prevent pollutants or germs in external air from making contact with a human body; and an air outlet of the air suction pipeline is in the oral cavity part of the human face, and purified and sterilized clean air is provided for human body breathing through the air suction pipeline. The protection cover is providedwith the breathing pipeline and the positive pressure air curtain pipeline, the purified and sterilized inspiratory clean air is provided for the human body through the breathing pipeline, and meanwhile the positive pressure