Babies always scratching the back of the head and ears may be caused by non-disease factors, such as sweat irritation, or may be caused by disease factors, such as pediatric otitis media and eczema of the external ear canal. It is recommended to take your baby to the hospital to improve relevant examinations and treat the cause of the disease after clarifying the cause. I. Non-disease factors: When the indoor temperature is high and the baby is prone to sweating, the baby may show symptoms of always scratching the back of the head and ears when local itching is caused by sweat stimulation. Parents should properly adjust the indoor temperature, you can use fans, air conditioning and other cooling, to prevent the baby to do scratching action, so as not to cause local damage. The symptoms of earache, stuffy ears and tinnitus can occur when the baby is young and cannot accurately express earache. Parents can use cefuroxime, erythromycin and other drugs for anti-infection treatment under the guidance of a doctor, and pay attention to local cleanliness and hygiene. 2. Eczema of the external ear canal: mostly caused by environmental and infectious reasons, babies can have obvious itching, which leads to scratching the back of the head and ears, and some of them may also have pain and flaking symptoms. Parents can use antihistamines such as loratadine under the guidance of a doctor to control symptoms, and topical medications such as hydrocortisone butyrate cream can be applied locally for treatment.