Whether a hyperechoic thyroid nodule is serious or not is based on a combination of ultrasound results as well as tests such as a puncture. If the diagnosis is benign, it is usually not serious; if it is malignant, it may be more serious. Hypoechoic thyroid nodule means that the echo of the nodule is lower than the surrounding thyroid parenchyma. It is generally believed that hypoechoicity is a suspected malignant ultrasound feature, but it is not absolute, and it needs to be combined with the size of the nodule, blood flow and other comprehensive judgments, and the nature of the nodule can be clarified through the thyroid puncture examination. If the patient is sure that the nodule is benign, there is no need to worry too much, and it is enough to go to the hospital regularly to review the nodule. If the nodule is found to be enlarged after review, or if the nodule is determined to be malignant, surgical removal may be an option. Patients with thyroid nodules should choose regular treatment as soon as possible to avoid delays.