A small ball inside the earlobe is mostly caused by sebaceous cysts, lipomas, keloids and other reasons. 1. Sebaceous cyst: its formation is mostly due to the obstruction of sebaceous gland excretory ducts, leading to the gradual increase of sebaceous gland cystic epithelial contents, and eventually swell to form cysts, manifested as a small ball in the earlobe, at this time can be followed by the doctor’s orders, depending on the circumstances of the excision of it. 2. Lipoma: If there is a lipoma composed of mature fat cells inside the earlobe, it may also lead to a small ball inside the earlobe, at this time, the cause should be clarified according to the CT examination and other means before treatment. 3. Keloid: some people may have small bumps inside the earlobe after ear piercing, which can be treated by laser therapy. After the appearance of a small ball inside the earlobe, you should go to the hospital in time for a systematic examination to make a clear diagnosis, and follow the doctor’s instructions to standardize the treatment.