Whether a hypoechoic thyroid nodule of 0.9*0.7cm needs treatment depends on the condition of the patient. For example, if the nodule has a malignant tendency, or if it increases in size and produces compression symptoms, such as dyspnea and dysphagia, surgery is usually needed. If the nodule is confirmed to be benign by pathologic examination and has no symptoms, treatment is usually not needed and regular follow-up is sufficient. Hypoechoic thyroid nodule means that the nodule echoes are lower than the surrounding thyroid parenchyma. It is generally believed that hypoechoic or very hypoechoic echoes belong to the suspected malignant ultrasound features, which may be a bad sign, but it is not absolute, and it is necessary to combine with the results of other examinations to clarify the nature of the thyroid nodule. The results of the current study show that the benign or malignant nature of the nodule is not related to the size of the nodule, and malignancy is not uncommon in nodules with a diameter of less than 1.0 cm. In the case of hypoechoic thyroid nodule 0.9*0.7cm, it is recommended to consult a doctor in time and follow the doctor’s instructions.