Thyroid nodule imaging mainly uses the TI-RADS grading system, which requires a decision based on five aspects: structure, echogenicity, aspect ratio, margins, and the presence of strong echogenic foci of the nodule, and it is generally not possible to determine what grade it is from the size aspect alone. Regarding the grading of thyroid nodules, it is recommended that the judgment be made by a specialist after examination. The TI-RADS grading system for thyroid nodule imaging grades thyroid nodules in 6 levels, based on the structure, echogenicity, aspect ratio, margins, and strong echogenic foci of the nodule. The higher the grade of thyroid nodule, the higher the risk of thyroid cancer. Thyroid nodules graded at grade 3 or below have a higher probability of being benign, grade 4 or above may be malignant, and grade 6 may be definitively malignant. If an abnormality occurs, fine needle aspiration of the thyroid gland is recommended to clarify the benign or malignant nature of the diseased tissue. If thyroid nodules are detected, it is recommended to seek prompt medical attention, make a clear diagnosis under the guidance of a doctor, treat the condition actively and review the condition on a regular basis.