The Chinese herb smallpox pollen has a slightly bitter and sweet taste, is slightly cold in nature, and belongs to the lung and stomach meridians. It has the effects of clearing heat and fire (removing heat and fire from the body), generating fluids and quenching thirst (promoting the production of fluids to quench thirst), and subduing swelling and draining pus (eliminating pus and swelling and draining pus). It is often used clinically to treat lung-heat and dry cough, fever and thirst, sores and swelling, internal heat and thirst (internal heat accompanied by symptoms such as excessive eating, drinking and urinating), and other conditions. The regular dose of decoction is 10~15g, and the single flavor of Chinese medicine can not play a role in treating diseases. Smallpox pollen is cold and bitter in nature, so it should be taken with caution for people with cold spleen and stomach (weak and cold spleen and stomach), loose stools, and it is forbidden for people who are allergic to it to avoid causing serious adverse reactions. Pregnant women should be cautious. It is not suitable to be used with Chuanwu, Prepared Chuanwu, Caowu, Prepared Chuanwu, Radix et Rhizoma Polygoni Multiflori. Smallpox pollen needs to be used under the guidance of traditional Chinese medicine practitioners in clinical applications, and should not be taken on its own to avoid serious adverse reactions to the body due to incorrect dosage or incorrect medication.