Mixed echogenic thyroid nodule category 3 is not serious if it is benign, but more serious if it is malignant, and it should be judged with or without accompanying symptoms. Mixed echogenic thyroid nodule category 3 is the result of thyroid ultrasound report, the possibility of malignancy is less than 2%, if the nodule size is small, the shape is regular, you can follow up regularly for review, when the nodule is too large to appear pressure symptoms can be considered for surgical treatment. When benign thyroid nodules are detected, patients are advised to follow up with ultrasound at intervals of 6 to 12 months. Ultrasound needs to be compared with the results of the previous ultrasound to determine the growth rate and size of the nodule. Thyroid nodules with aspect ratios greater than 1, with microscopic calcifications or unclear borders require fine-needle aspiration of the thyroid gland or direct surgical resection. In addition, the seriousness of the condition is also related to the accompanying symptoms. If it is a simple cyst without symptoms such as hyperthyroidism or hypothyroidism, it is usually not serious. On the contrary, it may affect the body’s metabolism and even lead to serious complications such as thyroid crisis. Thyroid nodules need to be treated in the thyroid surgery department of a regular hospital, and any discomfort should be treated promptly.