Fever is commonly associated with hyperthyroidism, a common endocrine disorder caused by the overproduction of thyroid hormones due to a variety of factors. The main clinical manifestations are hypermetabolic syndromes such as hyperphagia, lethargy, fever, hyperhidrosis, palpitations, agitation, enhanced neurological and vascular excitation, and various degrees of goiter and proptosis. The incidence of hyperthyroidism in children has been on the rise in recent years. The onset of the disease is slow, with most patients being seen six months to a year after the onset of the disease. It is difficult to predict the adverse stimulus factors, but as long as the diet is moderate, the living is regular, no delusional labor, quiet and vain (no selfishness, relaxed mood, happy spirit), in accordance with the laws of nature, coupled with appropriate physical exercise, not only can enhance the body’s immune function, but also has a certain positive significance in preventing the occurrence of hyperthyroidism. The common stress factors of fever are as follows. 1, Infection: including bacterial infection and viral infection caused by certain diseases. 2.Long-term trauma or strong mental stimulation: such as worry, sadness, panic, tension, etc. 3. The onset of the disease in a few patients is related to overexertion, trauma, pregnancy, excessive intake of iodine-containing foods: such as kelp, sea fish, jellyfish skin and iodine-containing drugs such as amiodarone, compound iodine solution, zinc iodide, iodine-containing herbs, etc. The majority of people are able to live a healthy life because of the constant regulation of their self-regulatory functions. However, when the control function is not normal, coupled with the stimulation of undesirable factors, it will lead to the occurrence of the disease. You should avoid unnecessary stress factors in your life and work to improve your quality of life.