White stuff in the belly button can be caused by septic infection, eczema, sebaceous cysts, lipoma and other factors. 1. septic infection: poor local hygiene and cleaning of the navel, not cleaned for a long time, can lead to bacterial and foreign bodies in the local breeding triggered septic infection, can appear white things. 2. Eczema: Eczema occurs at the navel, white, blister-like rashes can appear locally, and milky white secretions can appear, in addition to redness, swelling and itching and other uncomfortable symptoms. 3. Sebaceous cysts: localized pore blockage and bacterial infection at the navel can cause sebaceous cysts, which can appear as white lumps and are accompanied by local swelling and pain. 4. Lipoma: the navel is rich in fatty tissue, when the abnormal accumulation of fatty tissue, white lipoma-like lumps can be formed in the navel, when the size of the lipoma is large, there may be pain, usually no obvious symptoms. When there is something white in the belly button, you should consult a doctor in time, and under the guidance of a specialist, you can actively take appropriate treatment, which will help to cure the disease as soon as possible.