Hyperthyroidism, also known as hyperthyroidism, can lead to emaciation, mainly due to the increased synthesis and secretion of thyroid hormones, resulting in hypermetabolism of the nervous system, circulatory system and digestive system, and a large amount of thyroid hormones accelerates gastrointestinal peristalsis and fat metabolism, which can easily lead to emaciation. When hyperthyroidism occurs, the body produces hypermetabolic syndrome, and the patient may have fear of heat, panic, hyper appetite, and increased frequency of bowel movements. Thyroxine can enhance gastrointestinal peristalsis, and food stays in the gastrointestinal tract for too short a period of time, leading to insufficient absorption of nutrients causing wasting. In addition, it is recommended that patients suffering from hyperthyroidism, it is recommended to go to the hospital in a timely manner, follow the doctor’s instructions for treatment, to avoid delaying the condition.