The initial manifestations of hyperthyroidism include a hyperactive appetite, a large increase in the amount of food eaten, more bowel movements, and a diarrhea condition. Dry mouth, thirst, fear of heat, and excessive sweating. Emotions become easily irritable, like to lose temper, insomnia, dreamy, panic, shortness of breath, poor concentration, external manifestations of protruding eyes, blurred vision, swollen eyelids, neck becomes thick and large, goiter. Slight trembling of the limbs is accompanied by weakness of the limbs, the body appears to lose weight, and the mental state is poor. If the patient is a woman, she is prone to menstrual irregularities, and will have amenorrhea, scanty menstruation and other manifestations. When the initial manifestation occurs, we should actively go to the hospital for examination and clear diagnosis, in order to avoid delaying the condition.