Pregnant women with pain in the back of the head is common for the following reasons: First, cervical spondylosis, vertebral artery in the cervical spine transverse foramen in the process of walking by external compression and stimulation will cause spasm contraction, resulting in cerebral blood supply insufficiency, intracranial blood vessels undergo compensatory dilatation, which will cause pain symptoms in the back of the head. Second, the occipital nerve in the cervical spine and the occipital bone walking between the compression stimulation, can also be manifested in the innervation area of the back of the head, can appear pain symptoms, pain localization is more accurate, occipital bone and cervical vertebrae have a clear pressure point.