The most common causes of foot shaking: one, hypocalcemia, when the patient does not intake of calcium-containing substances for a long time or chronic diarrhea, vomiting, will cause a substantial reduction in blood calcium levels in the body, the excitability of the foot muscles will increase, resulting in the formation of irregular and involuntary contraction of the muscles vibration, that is, the foot shaking phenomenon; two, hyperthyroidism, the cause of the thyroid gland is hyperfunctioning or the circulatory system of the thyroid gland hormone levels increase. Sympathetic nerve excitation, resulting in increased metabolic rate of the body, can show special symptoms, such as hand and foot tremors, increased heart rate, irritability, weight loss, etc.; Third, Parkinson’s disease, mostly in patients over 60 years of age, due to unknown causes of dopaminergic neuron degeneration, necrosis, the level of dopamine content and the movement of the body has a close relationship with the limb tremor, such as foot trembling.