The symptoms of hyperthyroidism include: 1) the nervous system is easily agitated, talkative and hyperactive, anxious and irritable, with a subtle tremor of the tongue; 2) the circulatory system is characterized by an increased heart rate, palpitations and tachycardia on the electrocardiogram; in addition, patients may experience premature beats or atrial tachycardia or atrial fibrillation, and heart failure may occur in severe cases; 3) the digestive system is characterized by weakness, lethargy, increased frequency of stools and unformed stools; 4) women Patients show sparse menstruation, and a small number of patients may have amenorrhea, which affects fertility; 5. The motor system shows periodic paralysis, 10% of patients may have myasthenia gravis, and some patients show atrophy and weakness of the proximal muscle groups.