Side cypress leaves have the effect of cooling blood and stopping bleeding (making blood cool and moist, preventing bleeding), expelling phlegm and relieving cough, etc. The pharmacopoeia stipulates that the dosage of this drug is 6g~12g, and it is suitable to be used externally. The leaves of cypress are the leaves and tips of cypress, which are bitter and astringent in taste, and slightly cold in nature. It has the efficacy of cooling blood to stop bleeding, resolving phlegm to stop cough, and regenerating hair to make hair white. It is often used for spitting blood, epistaxis, hemoptysis, blood in stool, blood leakage, coughing due to lung-heat, hair loss due to blood-heat, and early whitening of hair. Siberian leaves can be decocted and boiled for internal use, and can also be used in pills or decoction for external cleansing of the affected area. The contraindications of this product is not clear, more long time to take easy to cause gastric discomfort. Feeling unwell, it is recommended to go to the hospital in time to consult a doctor, the use of cypress leaves should be guided by a professional physician.