Breathing glasses for purifying air include left and right air filters, an air transmission pipe at the left and right sides thereof, an air curtain ejection and air transmission device and an eye protection cover. The left and the right air filters include a filter casing, a composite filter layer, a built-in air inductor, an intelligent induction chip, a dual-channel variable-frequency turbofan and a miniature motor, a battery and a power control switch, and a lower air transmission transformation connection port. The air curtain ejection and air transmission device ejects air through an upper air curtain outlet groove, a lower air curtain air outlet groove and two breathing air transmission holes to form an air curtain isolation layer to block surrounding unclean air, clean air is ejected from the two breathing air transmission holes. A long-time wearing mode is provided when a portable external air filter is included.
