Because mugwort is a kind of traditional Chinese medicine, which contains a large number of volatile oil components, and also contains natural mosquito repellent components, so it has a certain mosquito repellent effect. Especially after the burning of mugwort, not only can make its active ingredients to play more fully, the smoke also has a supporting role, so the effect of burning mugwort mosquito repellent is still good.

The leaves of mugwort, perennial or slightly bushy, the plant has a strong aroma. Stem solitary or a few, brown or grayish yellow-brown, slightly lignified at the base, upper castor seed, and a few short branches, leaves thickly papery, grayish white pubescent above, the base usually without pseudostipules or very small pseudostipules; upper leaves and bracteate leaves pinnatifid, head ellipsoid, corolla tubular or salverform, glandular dots on the outside, anthers narrowly linear, the styles and the corolla subequal to the length of the corolla or slightly longer than the corolla. Achenes long ovate or oblong. Flowering and fruiting period in September-October. Mugwort leaves are dried and crushed to obtain moxa velvet, which is used to make moxa sticks for moxibustion and as raw material for seal paste. Distributed in Asia and Europe.