Normal situation after the newborn’s belly button falls off. The newborn’s belly button falls off usually within one to two weeks after birth. It is the first physiological problem of the newborn, and subsequent care is also particularly important. The following introduces the situation and care of normal newborns after their belly buttons fall off from four aspects. 1. Preparations before the belly button falls off. Before the newborn’s belly button falls off, make sure the surrounding environment is clean and dry, and do not let the diaper cover the belly button. At the same time, clean the belly button with warm water and cotton swabs or cotton balls every day to prevent infection. No styptic powder or antiseptic solution should be used before the umbilical cord comes off