Cynodonopsis has the effect of dispersing wind-cold, dispelling wind-dampness, opening the nose and stopping itching, etc. Hot water foot soak can relieve fatigue and promote blood circulation. But foot soaking is not the same as taking the efficacy of the drug, the specific effect is recommended to consult a professional physician. Cang Er Zi is warm, pungent, bitter and poisonous, and belongs to the lung meridian. The main nasal abyss (mainly manifested as nasal mucus obscene, the amount of wipe not clean); wind-cold headache; wind-dampness paralysis; rubella; eczema; scabies and other diseases. Adverse effects of Cangzhi is not clear, blood deficiency of headache, paralysis, contraindicated. Patients with rheumatic joint pain and discomfort in the limbs can consult a specialist for advice on foot soaking. Patients with broken foot skin, infection, etc. should not soak their feet. If the patient is not feeling well, please consult a doctor in time. It is not suitable for self-treatment, so as not to delay the best treatment period.