The invention discloses an indoor purely-natural Chinese herbal air-purifying agent which is prepared from the following purely-natural Chinese herbal materials: kaffir lily, stephanotis floribunda, spathiphyllum, aglaonema commutatum, adiantum, Yajiaoben, bracketplant, aloe, monstera deliciosa, Chinese ivy, ficus elastic, asparagus fern, lady palm, scindapsus aureus, cactus, rose essential oil, kudzuvine root starch and the like. The air-purifying agent does not contain a chemical substance and an additive thereof; in usage, the agent is disposed in a vessel and heated at a constant temperature about 50 DEG C, so the agent is evaporated and diffused in the air. The air-purifying agent provided by the invention can purify air, gives off sweet fragrance, has the effects of inducing resuscitation, restoring consciousness, raising spirit, eliminating inflammation and removing toxins, functions through contact with the skin of a human body and breathing of the human body, improves human immune capacity, exerts prevention and adjuvant therapy effects on diseases like cerebrovascular diseases and viral colds and has the advantages of convenient usage and a low price.