Hyperthyroidism may cause stomach pain, and other possible causes of stomach pain such as enteritis, indigestion, and poisoning need to be ruled out. Hyperthyroidism belongs to the endocrine system disease, the symptoms involve multiple systems, mainly including fatigue and weakness, excessive sweating, low fever, irritability and anxiety, easy to be agitated, panic, loss of weight, hyper appetite, abdominal pain, diarrhea and other manifestations, so hyperthyroidism is possible to have a stomach ache. There are many causes of stomach pain, such as gastrointestinal dyspepsia caused by improper diet, or gastritis, enteritis, gastric ulcer, duodenal ulcer, as well as poisoning and other reasons may cause symptoms of stomach pain. Hyperthyroidism patients with stomach pain should consult a doctor in time, follow the doctor’s instructions for examination, and standardize the treatment after clarifying the cause of the disease.