Six-month-old baby is always scratching his ears, considering that there are physiological or pathological factors, physiological factors such as sweating behind the ears and so on; pathological factors such as eczema, otitis media and so on. 1. Physiological factors: babies scratching their ears all the time may unintentionally imitate the behavior of adults and develop the habit; there may also be sweating behind the ears, which makes babies feel that there is itching in the skin at the ears, thus appearing the phenomenon of scratching the ears; in addition, when the cerumen in the ears, commonly known as excessive earwax, or the secretion of oily cerumen, it will stimulate the skin in the ears, causing itching and appearing the situation of scratching the ears. 2. Pathological factors: when there is eczema behind the ear, the baby will have itching, and will scratch the ear and the skin behind the ear uncontrollably; in addition, when the baby suffers from otitis media, there will be pus flowing out of the baby’s ear, which will stimulate the skin inside the ear and cause itching and discomfort, prompting the baby to scratch the ear. Six-month-old baby always scratching the ear, there may be other reasons, it is recommended to go to the hospital in a timely manner, improve the examination to clarify the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment.