After thyroid surgery, you need to wait until the incision has healed before you can swim. Usually, you can swim one month after the surgery when your health is more stable. After thyroid surgery, when the incision has not yet healed, swimming may cause the incision to get wet and become infected, so patients should wait until the incision has completely healed before swimming. In addition, since hypothyroidism is very likely to occur after thyroid surgery, and patients with hypothyroidism have poorer stamina and metabolism than normal people, excessive exercise is not recommended. If the temperature of the water is too low, or the swimming time is too long, it will be difficult for the patient to keep up with the physical strength, which may lead to drowning and other dangerous situations. Therefore, after thyroid surgery, the patient should follow the doctor’s instructions to take levothyroxine tablets and other medications, and wait until the physical condition is stabilized, then swim is better. If you have had thyroid surgery, please follow your doctor’s instructions for swimming and other sports after the surgery.