(Disclaimer: This article is for scientific use only. To protect patient privacy, relevant information in the following content has been processed) Abstract: Umbilical velvet is a disease caused by abnormal development of the yolk tube. Generally, small umbilical masses, bright red and 0.2-1 cm in size, may appear after the umbilical cord has fallen off in the affected child, and there will be bloody discharge with more friction and purulent discharge with infection. The child in this article came to the clinic with a swollen belly button, yellow discharge, and periumbilical rash, and was clinically diagnosed with umbilical velvet. The treatment was performed in a hospital for 3 days and followed up by an outpatient clinic 1 month later. At first, the umbilical cord was only the size of a green bean, and the umbilicus was a little moist with white discharge. The local doctor ordered disinfection with iodophor, but it did not feel better. When we looked at the umbilicus of the child, we saw a cherry red mass about 0.8 cm in size with a wide tip, the surface resembled intestinal mucosa, yellow discharge was visible, and eczema was visible around it. We explained to the family that umbilical cord velvet is a benign disease caused by the developmental malformation of the yolk duct, and that the treatment effect is generally good and does not affect the child too much in the future. Because the umbilical cord mass was relatively large and the tip was wide, surgery was recommended. The family was concerned that the child was too young for the surgery, and then we introduced to the family that umbilical cord surgery is relatively simple, does not take long, has few postoperative complications, and is relatively risk-free. After the family agreed, the child underwent a routine preoperative examination to rule out any contraindications to surgery and after perfect preparation, the umbilical cord was excised and the umbilical mass was completely removed. The child was discharged from the hospital on the second day after the operation in good condition with no other discomfort. The family was instructed to review the operation after 1 month. After the surgical treatment, the umbilical cord mass was completely removed without any other discomfort, and the child’s mental state, food intake and wound skin condition were also effectively relieved and improved. At the post-operative review 1 month later, the child’s general condition was good in terms of spirit, appetite, urination and defecation, and the umbilicus was free of masses, with good wound healing, no redness, swelling and secretion, and the eczema around the umbilicus gradually subsided, suggesting that the child’s prognosis was normal and the umbilicus was ready for daily general care. After the elimination of umbilical antler, in terms of daily care, first of all, we should pay attention to keep the local area clean and dry, wear soft clothes for the child to reduce local friction, clean the umbilical dirt in time, and disinfect it in time; 2, after the operation, generally wait for about 2 weeks for the wound to heal before the local area can see raw water to prevent local infection; 3, the family should pay attention to the local area to prevent local infection. 3. Families should pay attention to avoid strenuous activities or crying of the child to avoid affecting wound healing or causing other undesirable symptoms such as hernia; 4. V. Personal insight It can be seen that the umbilical cord of the child should be disinfected daily before it falls off to prevent the occurrence of umbilical velvet, and the state of the umbilicus should be observed diligently, and once blood and fluid are found, it should be treated by a doctor in time. Parents should not worry too much if their child has umbilical cord velvet, as it is a benign disease with abnormal development of the yolk duct and can be treated relatively well. If the umbilical cord is small, it can be treated with local astringent to make it fall off, but if the tip of the umbilical cord is thin, you can ask the doctor to ligate the tip aseptically and some of the umbilical cord can be necrotic and fall off; if the umbilical cord is large like the one in this case, it needs to be removed surgically. After surgery, pay attention to local care and keep the area clean and dry to help recovery, and the prognosis is usually good.