The protrusion of the navel after pregnancy is a normal physiological phenomenon that does not require excessive concern, so pay attention to maintaining local cleanliness and hygiene. However, the sludge inside is not recommended to be handled excessively, if it is more, use cotton swabs wet with warm boiling water to clean it. Generally speaking, as the pregnancy week lengthens, the size of the fetus gradually increases and the uterus becomes larger accordingly, which presses on the abdomen and causes the umbilicus to protrude. The degree of protrusion and the time of appearance are related to the size of the fetus, the tightness of the pregnant woman’s abdominal skin, whether there was an umbilical hernia when she was a child, and so on. Basically, it occurs in every pregnant woman in the middle and late stages of pregnancy and is a normal occurrence, so there is no need to worry too much. If the protrusion is serious, the activity may aggravate the degree of protrusion. During pregnancy, pay attention to regular maternity checkups, including general maternity checkups, Down’s syndrome screening, color ultrasound and 4D ultrasound, etc., to keep abreast of the baby’s and the pregnant woman’s condition. You should also enhance nutrition, eat more fresh vegetables and fruits and high-quality protein, such as milk, lean meat, eggs and soy products, and match meat and vegetables to a balanced nutritional diet. Be careful not to use drugs indiscriminately and prevent colds, which may affect the development of the fetus.