Infant hand shaking and shivering may be related to physiological causes such as cold and sound and light stimulation or pathological causes such as hypoglycemia and vitamin D deficiency rickets. 1. Physiological causes: When infants are exposed to cold and sound and light stimuli, their muscle reflexes may become hyperactive, making them prone to hand shaking and shivering. 2. Pathological reasons: if the infant does not like to eat, and the intake of breast milk or milk powder is low, there may be symptoms of hypoglycemia such as hand shaking and cold sweating; if the infant suffers from vitamin D deficiency rickets, it may cause hypocalcemia, leading to the symptoms of hand shaking. Parents are advised to take their children to regular hospitals in time to clarify the causes, and if treatment is needed, it should be standardized under the guidance of doctors.