Hai Tong Pi has the efficacy of dispelling wind-dampness, clearing channels and relieving pain (dredging meridians and channels, relieving pain), killing insects and relieving itching, and should be taken under the guidance of a doctor for treatment, and should be taken with caution in cases of blood deficiency. Hai Tong Pi has a bitter and pungent flavor, and is flat in nature. This product can dispel wind-dampness, through the meridians, stop paralysis, treatment of rheumatic paralysis, limb contracture, etc.; this product can dispel wind-dampness, kill insects and stop itching, decoction of external wash or internal use can be used for the treatment of scabies, eczema and other itchy skin and other diseases; This product also has the effect of treating red and white diarrhea and dysentery. Large doses of this product can lead to heart rate disorders, so clinical use should be taken under the guidance of a doctor and monitor the electrocardiogram. Caution should be exercised in cases of blood deficiency (yellowish face, pale lips and nails, dizziness). The drug should be taken under the guidance of a doctor and should not be used on its own.