A small bump on the inner wall of the ear that doesn’t hurt or itch may be caused by sebaceous cyst, papilloma of the external auditory canal, osteoma of the external auditory canal and so on. 1. Sebaceous cyst: If the hair follicles in the skin of the external auditory canal are blocked, a large amount of sebum accumulates in the sebaceous glands, which can form a cyst that does not hurt or itch. 2. Papilloma of the external auditory canal: a papillomatous swelling that may develop after the skin of the external auditory canal is infected by a virus. 3. Osteoma of the external auditory canal: If the bone of the external auditory canal bone part of the limited overgrowth can form a small lump, painless and itchy. It is recommended that those who have a small lump on the inner wall of the ear and do not feel pain or itch should consult a doctor in time to clarify the cause of the disease and carry out standardized treatment under the guidance of the doctor.