1. Exposing fresh mugwort leaves in the sun will also lose their efficacy, so it is best to "sun" them in the sun, which is often said. Dry in the shade: first, dry fresh folium Artemisiae Argyi in the sun until the surface is dry; 2. Then put the wormwood in a ventilated and cool place to dry in the shade for a while, and then put it away for preservation. When drying wormwood, pay attention to put it in a ventilated and dry place. Sometimes if you don't pay attention, you will find it when you keep it. The wormwood is moldy and loses its medicinal value, which is not worth the loss. If the weather is fine, put the harvested wormwood in a dry place. On the clean concrete floor, after the surface is free of moisture, choose a ventilated and cool place to dry in the shade. At this time, you can put it away and seal it. The preservation of dry goods is much simpler than fresh goods. The effect of dried mugwort leaves is the same as that of fresh mugwort leaves, so fresh mugwort leaves should be dried. After drying, store it in a dark, ventilated and dry environment. But be careful not to put dried mugwort leaves. After a long time, it can't be more than one year after sealing, otherwise Artemisia argyi will lose its medicinal value.