Hyperthyroidism refers to hyperthyroidism with symptoms involving various systems, including systemic symptoms, cardiovascular, digestive, neurological, reproductive and motor systems. 1. Systemic symptoms: Due to the excessive secretion of thyroid hormone, it causes symptoms of high metabolism, including fear of heat, excessive sweating, and emaciation. 2. Cardiovascular system: thyroid hormone acts on cardiac muscle cells, causing rapid heartbeat and symptoms of palpitations, and in serious cases, arrhythmia, atrial fibrillation and cardiac insufficiency. 3. Digestive system: thyroid hormone stimulates intestinal peristalsis, causing diarrhea, unshaped stools, excessive eating, and weight loss. 4. Nervous system: it is often manifested as agitation, irritability, easy to anger and so on. 5. Reproductive system: women may show scanty menstruation or even amenorrhea, etc. Men may show mammary gland development. 6. Motor system: the main manifestation of muscle weakness, proximal muscle atrophy is obvious, can be manifested as “hyperthyroidism myopathy”. Long-term thyrotoxicosis can also cause a decrease in bone density. Once found hyperthyroidism, we should go to the hospital in time, timely treatment, so as not to delay the condition.