Medicines in capsules are generally powders or granules that are irritating to the esophagus and gastric mucosa, or have bad taste, are easily volatile, are easily decomposed by saliva in the oral cavity, and are easily inhaled into the trachea. These medicines are packed into capsules, which not only protect the medicinal properties of the medicines from being destroyed, but also protect the digestive organs and respiratory tract. Removing the capsule shell may result in drug loss, drug waste, and reduced efficacy. In addition, some drugs need to be dissolved and absorbed in the intestine, and the capsule protects the drug from being destroyed by stomach acid. In medicine, it refers to a capsule made of special film-forming materials (such as gelatin, cellulose, polysaccharide, etc.), and the contents (such as powder, liquid drugs, etc.) or doses are loaded into it for easy swallowing.