Generally, blackheads inside the ears are clinically caused by deposits of oil, exfoliated keratin and dust secreted by the sebaceous glands inside the hair follicles. Usually, blackheads are caused by overproduction of sebum from the sebaceous glands or other causes. The skin of the auricle and external auditory canal also has hair follicles, sebaceous glands and sweat glands. When the sebaceous gland ducts are clogged and the secretions cannot be discharged, they accumulate in the sebaceous glands, and blackheads will form when the pores of the sebaceous glands are blocked. Blackheads are usually found in teenagers who have high sebaceous gland secretion. Blackheads inside the ears usually do not require special treatment, but if severe or persistent discomfort occurs, it is recommended to go to the hospital in time.