The first thing to do is to see if the tumor is on the thyroid gland. If the nodule moves with the swallowing process, it means that it is basically on the thyroid gland, and if this cannot be determined, then other ancillary tests can be taken. Then we need to identify the presence of hyperthyroidism and hypothyroidism, if there is hyperthyroidism or hypothyroidism, special treatment is needed. To identify whether the tumor is benign or malignant, it is necessary to make a comprehensive judgment. First of all, it is necessary to look at the medical history, such as if there is a family thyroid tumor, then the possibility of malignancy is higher; in addition, prepubertal children and men over 60 years old are more likely to have malignant thyroid tumors, and if they have had nasopharyngeal carcinoma and have had radiotherapy, and then the thyroid gland grows a tumor after 5 years, then the possibility of malignancy is higher. Then we should look at the clinical manifestations to see whether the tumor is multiple or solitary. Generally, multiple tumors are more likely to be benign, while solitary tumors are often malignant. It is also necessary to look at the size and growth rate of the tumor, if the growth rate is very fast in a short period of time and there are compression symptoms, then there may be malignant lesions. You can also judge by touch, if you feel hard or the surrounding lymph nodes are enlarged or adhered together, you can highly suspect that the tumor is malignant. All these are the methods to judge by experience, but through some auxiliary examination methods, we can determine whether the tumor is benign or malignant.