Infants like to scratch their ears usually due to physiological factors such as perception of the world, and pathological factors such as eczema and otitis media. 1. Physiological factors: babies like to scratch their ears may be the same as babies eating fingers, through touching their own ears to further perceive and recognize the surrounding world, which is a normal growth process. 2. Pathological factors: infants like to scratch their ears may also be caused by diseases, such as eczema, otitis media and so on. If an infant has eczema in the external ear canal, the infant may scratch the ears to relieve the itchy symptoms; infants like to scratch the ears may also be due to otitis media caused by bacterial infection, usually accompanied by pus, hearing loss and other symptoms. There may be other reasons why infants like to scratch their ears, so it is recommended that they go to the hospital in time for a complete examination to determine the cause of the disease and then give targeted treatment under the guidance of the doctor.