Sitting for a long time the feet will shake unconsciously, most cases are caused by physical or mental factors. Due to the cerebral cortex motor area downstream fibers, basal ganglia, brainstem, cerebellum and other parts of the lesions caused by hyperthyroidism, neurological disorders, muscular disorders, and for example, Parkinson’s syndrome and so on. In addition, hypoglycemia and some neurological factors can also cause involuntary shaking of the feet, which should be confirmed by some specific neurophysiological examinations and laboratory tests. So if there is a long time sitting feet will be involuntary shaking situation must pay attention to, please go to the regular hospital in a timely manner, to carry out some relevant imaging examination and detailed physical examination, to be able to clearly diagnosed, and then choose the regular treatment, do not delay the condition.