Walking can not walk straight line is caused by pathological reasons such as cerebral hemispheric lesions, cerebellar lesions, peripheral vestibular organ lesions caused by limb weakness or balance disorders, need to be analyzed specifically. 1. Cerebral hemispheric lesions: for example, some patients with mild cerebral hemorrhage or cerebral infarction can show weakness of one side of the limb, and at the same time, they can have symptoms of dizziness, nausea, and tilting to one side when walking, which can be diagnosed by brain CT and brain MRI. 2. Cerebellar lesions: Infarction or hemorrhage in the cerebellum. Since the cerebellum controls the balance and sensation of the human body, when there are abnormalities in the cerebellum, symptoms such as dizziness, slow speech, nausea and vomiting, and unsteady walking can be manifested, which can be diagnosed by brain CT and brain MRI. 3. Peripheral vestibular organ lesions: such as benign episodic positional vertigo caused by degeneration of inner ear organs, labyrinthitis, Meniere’s disease, etc., which is mostly accompanied by vertigo, nausea, vomiting, and can also be manifested as unsteady walking. When walking can not walk in a straight line, must raise vigilance, timely to the hospital for a clear diagnosis, early treatment, so as not to delay the condition.