The hollow capsules of pullulan have a good appearance and shape, which is crystal clear, which improves the quality of the product. It has low water content and low oxygen permeability. Pullulan capsules can protect the contents from oxidation and are easy to store. Because it does not contain animal tissue ingredients, it is a green natural product and used by people who conform to vegetarianism and different religious beliefs. Pullulan capsules have the advantages of wide applicability, no risk of cross-linking reaction and high stability. Pullulan is a natural water-soluble polysaccharide that is produced through fermentation and is widely used as an additive in food, medicine and consumer products. , Is a soluble fiber source, there is no risk of cross-linking reaction of amino acids in gelatin (after cross-linking, it is easy to cause disintegration or reduced dissolution), the drug release rate is relatively stable, and individual differences are small. In terms of storage conditions, according to tests: Pullulan plant capsules are almost not brittle in a low-humidity environment, and the shell properties are still stable at high temperatures. Gelatin capsules are easy to lose water and harden or become brittle under high temperature and low humidity conditions, and are highly dependent on the temperature, humidity and packaging materials of the storage environment. For the large temperature difference between the north and the south in my country, and the different storage conditions of transportation and retail terminals, pullulan plant capsules undoubtedly provide solutions for some pharmaceutical factories and health care products companies.