The prevalence of thyroid nodules in the general population is 3-7% on palpation, while the prevalence of thyroid nodules detected by high-definition ultrasound is 20-70%. Thyroid nodules are a relatively common endocrine disorder. Thyroid nodules are one or more masses of abnormal tissue structure in the thyroid gland that are caused by a variety of reasons. They may be associated with overgrowth of normal thyroid tissue and inflammation of the thyroid gland, etc. Most nodules are generally benign, and a small percentage may be malignant. Color ultrasound provides a comprehensive assessment of the size, shape, blood flow, and echogenicity of thyroid nodules. If abnormalities are present, a puncture biopsy may be necessary. If you find a thyroid nodule, please go to the hospital as soon as possible.