Mugwort boiled eggs can be used mainly to treat irregular menstruation due to deficiency cold. Mugwort is a traditional Chinese medicinal herb that has the effect of warming the uterus, tonifying kidney yin, unblocking the meridians and warming the menstrual channels to disperse cold, but it has no significant effect on other causes of menstrual irregularities, such as blood heat and blood stasis. Patients should note that boiled eggs with mugwort leaves should not be taken during menstruation, otherwise it will increase the volume of menstruation. In addition, boiled eggs with mugwort leaves are also effective for menstrual cramps.