If a hard black mass falls out of the ear, this condition is most often considered cerumen, which is often referred to as earwax. This is a hard, dark brown, light yellow, or brown lumpy substance. This condition is most often due to a long period of time without cleaning the external ear canal, and the cerumen accumulates for a long time and nodulates in a lumpy form. It is more common in children because the external ear canal is narrower and the secretions from the external ear canal cannot be discharged in a timely manner during development, and there is no timely cleaning by adults, resulting in the accumulation of lumpy brown or dark brown hard lumps over a long period of time, and this substance needs to be cleaned up at the ENT department. However, some of them will be discharged from the external ear canal on their own with human movement, such as chewing and running, so there is no need to worry about it.