Navel therapy is one of the external treatment methods in Chinese medicine. Based on the theoretical basis of the meridian theory of Chinese medicine, medications are selected and applied to the navel area according to the needs of different diseases, and fixed with adhesive tape. Through the stimulating effect of drugs on the umbilical points and local permeability, it can stimulate the meridian energy, unblock the meridians, promote the flow of qi and blood, and adjust the function of the internal organs of the body, so as to achieve the purpose of preventing and treating diseases. Navel therapy originated in ancient times and has been handed down for more than 2000 years. Its treatment mainly includes the application of medicine to the umbilical cord, filling the umbilical cord, navel, steaming the umbilical cord, fumigating the umbilical cord, ironing the umbilical cord and so on. It is collectively called umbilical cord therapy. The umbilicus, or Shen Que, is an important point in the meridian system. According to Chinese medicine, the umbilicus is connected to the twelve meridians and to the internal organs. The umbilicus is the origin of the innate nature and the origin of life. “The umbilicus is the movable qi between the kidneys, and the qi passes through all the veins, spreads to the five viscera and six internal organs, and travels internally through the internal organs and meridians, so that all the veins and smooth, hair orifices are accessible, up to the mud pills and down to the spring”. Modern research has confirmed that the umbilicus has a rich network of veins and subcutaneous artery branches, and compared with the structure of the whole body skin, its epidermal horny layer is the most book, the barrier function is the weakest, and there is no adipose tissue under the umbilicus, the skin fascia and the abdominal wall are directly connected, so the permeability is strong, which is conducive to the absorption of drugs. In addition, the drug molecules can enter the intercellular matrix through the umbilicus and quickly disperse in the blood, and rarely pass through the liver without being destroyed, thus avoiding the weakening of the drug by the action of gastrointestinal digestive juices after oral administration, and reducing the adverse reactions of the drug to the liver, as well as the stimulation of oral drugs to the gastrointestinal tract and the impact on digestive function, and giving full play to the drug effect and improving the utilization rate of the drug.