Hyperthyroidism is not usually transmitted through kissing. Hyperthyroidism is an endocrine disease caused by excessive synthesis and secretion of thyroid hormones leading to hypermetabolism, which can be triggered by toxic diffuse goiter, long-term massive iodine intake or iodine-containing medications, etc., and can be characterized by weight loss, palpitations, irritability, fear of heat, excessive sweating, etc.; therefore, hyperthyroidism is not a contagious disease, and is not usually transmitted through kissing. Although hyperthyroidism is not contagious through kissing, kissing may be infected with Helicobacter pylori, as well as EBV, neococcal pneumonia, and tuberculosis. If there is a suspected infectious disease or hyperthyroidism symptoms of the patient can go to the hospital, ask the doctor to make a judgment. Tip: “New coronavirus pneumonia” and “new coronavirus pneumonia” mentioned in this article were renamed to “new coronavirus infection” on December 26, 2022, as announced by the National Health Commission.