Hyperthyroidism can affect sexual life to some extent, causing a person to have a reduced sex drive. However, most patients with hyperthyroidism are more mentally stimulated, which tends to mask the manifestations of their reduced libido. Hyperthyroidism is caused by the synthesis and release of excessive thyroid hormones by the thyroid gland, resulting in hyper-metabolism and sympathetic excitation, which leads to abnormalities in the endocrine system and affects the reproductive and urinary systems. Men may show impotence, frequent urination, breast development, decreased libido and reduced sperm volume; some men may show hypersexuality; women may experience menstrual disorders, amenorrhea, abnormal ovulation and infertility. Therefore, hyperthyroidism patients must go to the hospital’s for standardized treatment.