Navel bleeding, may be caused by the following reasons: 1, there may be local skin, mucous membrane rupture, usually caused by trauma, such as accidentally picking the navel with nails, resulting in skin and mucous membrane damage, which led to bleeding. 2, there may be a rash around the navel, the rash led to the skin is relatively dry and rupture, which led to bleeding. 3, the most common is eczema, or by fungal infection caused by ringworm formation. The most common is eczema, or by fungal infections lead to ringworm formation. 3, may be a major abdominal trauma and lead to, such as abdominal impact injury, car accidents or fall injuries, there may be localized abdominal skin, or navel skin contusion. 4, may be by the stomach inside the intestines, or other organs break through the navel skin and protruding.