The thyroid gland is an important endocrine gland in the human body. The thyroid gland is located directly in front of the neck, and the role of the thyroid gland is mainly to secrete thyroid hormones. The difference between an enlarged thyroid gland and hyperthyroidism mainly includes the following points: 1. An enlarged thyroid gland is a change in the appearance of the thyroid gland, mainly manifested as a thickening of the neck. Hyperthyroidism refers to an overproduction of thyroid hormones due to the hyperactive thyroid gland. 2. Hyperthyroidism, on the other hand, is mainly characterized by hyperthermia, panic attacks, sweating, excessive food and hunger, weight loss, protruding eyes and other hypermetabolic symptoms. 3. An enlarged thyroid gland may or may not be accompanied by hyperthyroidism. The treatment of hyperthyroidism may or may not be accompanied by an enlarged thyroid gland.4. If the enlarged thyroid gland has no symptoms of pressure and normal thyroid function, it can be left untreated, while hyperthyroidism requires active treatment under the guidance of a doctor.