The patient’s back of the head dizzy, want to vomit, mainly consider the following aspects of the cause: 1, to consider is peripheral vertigo disease, if the patient’s back of the head dizzy, want to vomit, accompanied by tinnitus, ear tightness of the symptoms may be Meniere’s disease attack. If the patient’s dizziness and vomiting at the back of the head is associated with changes in the position of the head, the most common clinical consideration is otolithiasis. If the patient has an acute upper respiratory tract infection within two weeks before the onset of the disease, the dizziness in the back of the head, want to vomit symptoms are more obvious, we should consider that it is caused by vestibular neuronitis; 2, we should consider that it is caused by central vertigo, if the patient’s dizziness in the back of the head, want to vomit, accompanied by unsteady walking, ataxia manifestations, the site of the lesion is generally located in the cerebellum, it may be ischemia of the cerebellar region or a slight cerebellar hemorrhage. If the lesion is usually located in the cerebellum, it may be caused by ischemia in the cerebellum or a slight cerebellar hemorrhage, which can be clarified by head CT, head magnetic resonance imaging, functional brain imaging and transcranial Doppler.