A protruding mass in the umbilicus is one of the symptoms of umbilical hernia in infants and children, a congenital developmental defect disorder that decreases with age. Most can heal spontaneously within 2 years of age. The surface of the hernia is covered with skin mainly manifested by a protruding swelling in the umbilicus, which increases when crying, and the skin is tense and thin with a slight greenish color The swelling shrinks and disappears when lying down or sleeping quietly, leaving a loose fold in the umbilicus. Prevention and care methods for infants with swelling protruding from the umbilicus: 1, parents must master the routine disinfection methods, only disinfection of the surface is not enough, must be thoroughly cleaned and disinfected from the root of the umbilicus from inside to outside the ring. 2, avoid urine and feces pollution, it is best to use water-absorbent, breathable disinfectant diapers, check whether the diapers are wet when the child cries, and replace them in a timely manner. 3.When taking a bath, be careful not to wash the wet umbilicus. After bathing, use sterilized dry cotton sticks to absorb water from the umbilical fossa and disinfect with 75% alcohol to keep the area dry. Observe whether the umbilical cord is moist, oozing or purulent secretions, if there is any, treat it promptly by cleaning the umbilical cord thoroughly with 3% hydrogen peroxide, disinfecting the dry cotton branch and then dehydrating it with 95% alcohol, and after drying, put on iodoform powder (to inhibit traumatic secretions and purulence, and have an analgesic effect); if the inflammation is obvious, put on Bactrim ointment or choose antibiotics as prescribed by the doctor. 5.After the umbilical cord stump is detached, pay attention to the umbilical fossa to observe whether there is a cherry red granuloma growth, which should be treated early to prevent the granuloma from growing too long and delaying the treatment, and can be treated with 10% silver nitrate solution cautery. 6.Pay attention to umbilical velvet, umbilical fistula, umbilical oozing blood or umbilical cellulitis, etc., which should be treated promptly. If the umbilical cord stump does not fall off for a long time, observe whether the umbilical cord was not tied firmly when it was broken and a small amount of blood circulates. 8.Avoid the local method of delivery at home, where scissors are not sterilized or boiling water is used to cut the umbilical cord, resulting in infection leading to tetanus. 9.When taking care of the umbilical cord, wash your hands first and pay attention to keeping the baby’s abdomen warm. Warm tip: If the umbilical hernia does not heal after 2-4 years of age, or if the umbilical ring diameter is large (more than 2 cm), or if there are adhesions between the internal organs and the umbilical hernia sac (the contents of the hernia cannot be completely reset), or if a few atypical hernias persist, umbilical hernia repair can be considered.