You usually don’t need to put a belly button patch on the umbilical cord when you take a bath after the cord has fallen off. When the umbilical cord falls off, the umbilical blood vessels have repaired themselves. If there is no localized oozing and infection, you don’t need to put on the belly button patch when taking a bath, which will not cause localized infection. If you are not sure, you can use povidone-iodine to sterilize the area after bathing to prevent infection. After the umbilical cord is dropped, if there is localized oozing or pus, suggesting localized infection, in the process of bathing, should try to avoid flushing with water, resulting in aggravation of the infection or recurrence, at this time, you can appropriately stick the belly button patch for protection. It should be taken off in time after bathing, keep the local clean and dry, and use iodophor to sterilize. It is best not to take a bath on the same day when the umbilical cord falls off, and it is recommended to observe and sterilize the umbilical perimeter when taking a bath, and be sure to keep it dry and avoid friction.