The frequency of using mugwort foot soak to remove dampness depends on the specific condition of the patient, generally 2-3 times a week. The main effect of mugwort is to warm the menstruation and stop bleeding, dispel cold and pain, dispel dampness and stop itching, and it is commonly used clinically to remove dampness from the body, mugwort foot soak generally 2-3 times a week, 20 minutes each time, the water temperature needs to be controlled at 38℃-39℃. However, the time of foot soaking should not be too long, because during foot soaking, the temperature of the lower extremities rises, blood vessels become congested, and blood flows to the lower extremities, which can lead to insufficient blood supply to the brain and heart, which can instead cause symptoms such as dizziness, headache and mood changes in patients. Therefore, a long time and high frequency of foot soaking with mugwort not only can not restore the body to health, but also cause body deficit and produce counterproductive effects. The frequency of foot soaking with mugwort should not be too high and the time should not be too long, but the frequency should not be too low to ensure the therapeutic effect.