The most common causes of foot shaking: first, hypocalcemia, when patients do not consume calcium-containing substances for a long time or chronic diarrhea, vomiting, will cause a significant reduction in the level of blood calcium in the body, the excitability of the foot muscles will increase, resulting in irregular, involuntary muscle contraction to form vibration, that is, the phenomenon of foot shaking; second, hyperthyroidism, the cause is hyperthyroidism or increased levels of thyroid hormones in the blood circulation system. Sympathetic excitation, resulting in an increase in the 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 seen in patients over 60 years of age, due to unknown causes of degeneration and necrosis of dopaminergic neurons in the body, the level of dopamine content and body movement has a close relationship, can appear limb tremors, such as foot tremors.