Pollen is the root of Juniperus communis, a perennial vine of the Cucurbitaceae family. It is produced in the north and south of China. It is sweet, slightly bitter and slightly cold in nature. It belongs to the lung and stomach meridians. The specific effects of asparagus pollen are clearing heat and generating fluids, clearing lungs and moistening dryness, detoxifying and eliminating carbuncles. The main treatment of smallpox pollen is feverish thirst, thirst and drinking, lung heat and dry cough, carbuncle sores and ulcers. The usage of smallpox pollen is decoction. According to modern medical research, smallpox pollen protein has immunogenicity, can promote the production of immunoglobulin, has a strong antigenicity, and thus has the role of enhancing immunity. Smallpox pollen protein also has strong inhibitory effect on the replication and spread of certain viruses, thus playing an antiviral role. Smallpox pollen has an inhibitory effect on certain tumor cells, in addition, smallpox pollen polysaccharide also has anti-cancer activity. Smallpox pollen contains both sugar-raising and sugar-lowering components, and its effects cancel each other out. For the treatment of diabetes, it is often used in conjunction with yin-nourishing medicines to achieve both symptoms and root causes. Smallpox pollen protein has obvious allergic reactions, but smallpox pollen decoction has no obvious side effects, and a few patients have gastric discomfort. Due to its antigenic nature, it is not suitable for autoimmune and allergic diseases. It is even more inappropriate for patients who are already in a hypersensitive state. Therefore, it should be used under the guidance of a doctor, and should not be taken on its own.