Hello: hawthorn leaves, sour in taste and flat in nature, belong to the lung meridian, and have the effects of relieving itching, healing sores and lowering blood pressure; Can be used for treating lacquer sore, ulcer non-convergence, and common hypertension; It can be used for external foot bath, and can also be used instead of soaking tea in water to prevent and treat hypertension and hyperlipidemia and improve vascular activity.