Usually, patients with hyperthyroidism can eat watermelon. If combined with blood sugar abnormalities, watermelon intake needs to be controlled. Hyperthyroidism is mainly caused by the thyroid gland secreting too much thyroid hormone, which can trigger a series of high metabolic syndrome. Diet is mainly to avoid the intake of iodine-rich foods, such as sea shrimp, seaweed, kelp, etc.. Watermelon as a common fruit, rich in water, vitamins, fiber, etc., the nutrient supplementation is helpful, moderate consumption generally will not aggravate the condition. However, it should be noted that due to the fact that hyperthyroidism patients are in a state of high nutritional consumption, gastrointestinal peristalsis is faster, the basal metabolic rate is increased, which may be secondary to elevated blood glucose, so in the case of blood glucose abnormality, it is important to control the intake of watermelon. Hyperthyroidism patients should pay attention in daily life, avoid excessive exercise, also not to stay up all night, actively quit smoking and drinking. After the discovery of the disease, must be standardized treatment under the guidance of the physician, so as not to cause adverse effects on the organism.