If the thyroid cyst is small and disappears suddenly with no adverse effects, it can usually be treated without special treatment. If the thyroid cyst is small and has no adverse reaction before it disappears, and there is no discomfort after it disappears, no special treatment is usually needed and regular observation is sufficient. If the thyroid cyst itself is a huge one, it will disappear temporarily when the neck is moving, but will appear again afterwards, and is accompanied by symptoms such as difficulty in swallowing, difficulty in eating, choking on water, hoarseness, etc., then it needs to be treated in time, so as to prevent the cyst from gradually enlarging and compressing other tissues, and producing adverse reactions. Thyroid cysts should be treated as soon as any discomfort is detected.