Pain below the back of the head may be caused by cold stimulation, cervical spondylosis, brain diseases, vascular causes, bad habits and other reasons, as follows: 1, cold stimulation: the head is stimulated by cold, attention should be paid to avoid cold, if necessary, it is recommended that patients go to the hospital for examination; 2, cervical spondylosis: cervical spine lesions compress the brain nerve, causing pain below the back of the head; 3, brain diseases: cerebral vascular infarction, vascular malformation Nerve lesions and other causes of pain; 4, vascular causes: capillary spasm or sleeping with a pillow too high may also lead to pain below the back of the head, it is recommended that the pillow should not be too high when sleeping; 5, bad habits: do not overstress, overwork in daily life, try not to smoke, drink, because bad habits can also lead to pain below the back of the head.