The correct way to cook mugwort leaves for internal use is by decoction in water, and for external use is by decoction in water for fumigation. Mugwort leaves are the dried leaves of the plant Mugwort, family Asteraceae. It is hard and warm in nature, and belongs to the liver, spleen and kidney meridians. It has the efficacy of warming menstruation and stopping bleeding (warming the body’s meridians to stop bleeding in the body), dispersing cold and relieving pain (relieving pain by dispelling cold in the body), and dispelling dampness and relieving itching, and it can be used in the treatment of cold pain in the abdomen, menstrual disorders, vomiting of blood, and disintegration of menstruation (excessive menstruation or dripping of menstruation), and other conditions. Mugwort leaves can be taken internally in a decoction, and externally made into moxa sticks for smoking and moxibustion or decoction water for fumigation. The adverse effects of the drug are not known, but it should be used with caution for Yin deficiency and blood heat. If you need to use the medicine, it is recommended to go to a regular hospital for consultation and treatment under the guidance of a professional physician to identify the symptoms.