The invention relates to breathable glasses with an air purifying function. The glasses comprise two air filters arranged on the left side and right side, air delivery pipes arranged on the left side and right side, an air curtain jetting and air delivery device and a binoculus protecting cover, wherein each air filter comprises a filter shell, a composite filtering layer, a built-in air sensor, an intelligent sensing chip, a double-channel variable-frequency turbofan, a micro motor, a battery, a power control switch, and a lower air delivery conversion connector. Air is jetted from the air curtain jetting and air delivery device through an upper air curtain air outlet groove, a lower air curtain air outlet groove and two breathing air delivery holes to form an air curtain isolation layer, surrounding unclean air is blocked, and a large amount of clean air jetted from the two breathing air delivery holes is inhaled by a user. When a portable external air filter is arranged, the glasses can be worn for a long time. When the glasses are used, only a small part of the face is covered, and facial expression is not affected during communication. Unclean air can be isolated for a short term or long term, so that people are prevented from inhaling dust, smoke, plant pollen, bacteria, fine particles and the like, and air communicable disease are prevented.