Newborn baby belly button usually 10-15 days can grow well. Newborn baby umbilical cord will usually 7-10 days will naturally fall off, the latest not more than 2 weeks, usually 10-15 days after birth belly button can grow well. Before the newborn’s navel heals, try to avoid touching water, and need to pay attention to protect the navel when bathing, to avoid external forces causing the umbilical cord to fall off. If you accidentally get wet, you need to dry the water in time. Also need to pay attention to diligent disinfection, such as the use of povidone-iodine swabs to disinfect the umbilical cord, parents gently lift the umbilical cord in one hand and take the swab in the other hand, first disinfect the umbilical cord at the root of the umbilical cord, from the inside to the outside, and then disinfect the umbilical cord by circling it clockwise. Parents need to carefully observe the recovery of the newborn’s navel on a daily basis. If there is a large amount of purulent secretion oozing out from the umbilicus, redness and swelling around the umbilicus, or bulging around the umbilicus, you need to seek medical attention in a timely manner, and under the guidance of the doctor for treatment.