The difference between vertical and horizontal navels is the difference in shape. After the birth of the fetus, separated from the mother, the umbilical cord connected between the two should be cut, the umbilical cord stump slowly closed, the formation of the navel, according to the direction of the cut and so on, the shape of the navel is different, but the navel does not have a fixed shape. The navel is a relatively weak part of the human body, easy to cause infection as well as inflammation, in daily life, should keep the navel area clean and dry to prevent infection. Cleaning can use cooking oil to soften the dirt in the navel, or in the bath, with warm water to soften the dirt, do not use your hands to deduct the dirt, which will cause adverse reactions.