Mugwort 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 can be used externally to dispel dampness and relieve itching. However, as a single Chinese medicine, it has limited effect in treating eczema. Generally, it can be used with Xionghuang, Fangfeng, pepper decoction and fumigation treatment. Mugwort is pungent and warm in nature, with the effect of warming menstruation and stopping bleeding (warming the human body’s meridians and stopping bleeding in the body), dispersing cold and relieving pain (relieving pain by dispelling cold in the body), and dispelling dampness and relieving itching. Clinically, it is used to treat menstrual disorders, vomiting blood, epistaxis, hemoptysis, blood in stool, eczema and other symptoms. The efficacy of moxa leaf for external use is to dispel wind and relieve itching (to relieve itching by removing the wind that invades the surface of the muscle), clinically for mild eczema, there is a certain degree of relief. But as a single herb is not very useful. It can be used in combination with some insecticidal and antipruritic herbs such as Xionghuang, thus playing an auxiliary therapeutic role. Clinically, it is not recommended to use moxa leaves for patients with yin deficiency and fire (deficiency of yin and essence in the body and hyperactive fire) to avoid aggravation of yin deficiency and fire, which may lead to symptoms such as heat in the hands and feet and dryness of the mouth and tongue. Whether it is applied externally with mugwort leaves, or used to take a bath, are only able to alleviate the symptoms, not able to treat eczema, skin eczema is serious, should promptly go to the regular hospital, should not be unauthorized use of medication, so as not to delay the condition.