Thyroid nodules with mixed echoes are described by ultrasound findings, and whether they are dangerous or not needs to be analyzed in detail. If it is judged to be a benign nodule without any uncomfortable symptoms, then it is not dangerous; if the examination suggests that there is a possibility of malignant lesions, or there are obvious abnormalities in thyroid function, it is a relatively dangerous manifestation. 1. If the thyroid nodules are mixed echoes and other ultrasound manifestations show a series of benign signs such as smooth edges, clear borders, aspect ratio less than 1, and the thyroid function is maintained at the normal level, the corresponding condition is not dangerous. 2. Thyroid nodules with non-smooth edges, blurred borders, aspect ratios greater than 1, and obvious blood supply, etc., suggest that there is a possibility of malignant lesions, or the lesions themselves are accompanied by obvious hyperthyroidism, which is relatively risky. Patients need to determine the status of thyroid nodules through clinical synthesis, and if abnormalities are found, standardized treatment under the guidance of clinicians is required.