Black stuff falling out of infant’s ear can be considered as cerumen or foreign body in the external auditory canal. 1. Cerumen: Cerumen glands in the skin of the cartilage part of the external auditory canal will secrete cerumen. Since the ear canal of infants is fragile and should not be dug out frequently, the cerumen accumulates and when it becomes dry and black, it may fall out of the ear with the movement of the head during activities. 2. Foreign body in the external ear canal: infants can insert smaller objects into the ear when playing, and the foreign body stays in the ear canal. Small and non-irritating non-biological foreign bodies may not cause clinical symptoms, and some foreign bodies may fall out of the ear canal during activities. Some foreign objects may fall out of the ear canal during activities. When you find black objects falling out of the ear of infants, you should check the condition of the ear canal in time, and if the infants have more than one cry, you should consult a doctor in time and follow the doctor’s instructions.