5-month-old babies shaking head is considered to be physiological factors, and the baby’s head of poor hygiene or environmental factors, etc.; may also be due to pathological factors, such as calcium or vitamin D deficiency, eczema and so on. 1. Physiological factors: due to the parents of 5-month-old babies improper care, head not timely cleaning or sweat stimulation, but also because the baby’s visual and auditory are not well developed, more sensitive to the external environment, showing the above symptoms is a normal phenomenon, with the age of the month will gradually ease. 2. Pathologic factors: (1) Calcium or vitamin D deficiency: because parents do not regularly give 5-month-old infants vitamin D supplementation, resulting in rickets, occipital baldness symptoms, showing the above discomfort. (2) Eczema: due to the infant’s exposure to allergens or allergic environment, resulting in eczema on the head, localized itching induced shaking head symptoms appear. There may be other reasons for 5-month-old babies shaking their heads, it is recommended to go to the hospital in time to improve the examination to clarify the cause of the disease, and then give targeted treatment or treatment under the guidance of the doctor.