Enlarged lymph nodes in the neck are usually caused by the following reasons: First, if the patient falls and injures the neck during strenuous activities, it will lead to soft tissue injury in the neck and will be accompanied by superficial lymph node enlargement and hyperplasia, and inflammation and infection around the patient’s neck can also lead to secondary or proliferative lymph node enlargement, for example, acute tonsillitis, acute pharyngitis, or gingivitis, etc.; Second, in addition to the above reasons, when thyroid malignant tumors proliferate, the invasion of tumor cells can also lead to enlargement of the lymph nodes in the neck. In addition to the above reasons, when thyroid malignant tumor proliferates, the invasion of tumor cells can also lead to the enlargement of cervical lymph nodes. The above are the more common causes of cervical lymph node enlargement, although cervical lymph node enlargement, in itself, does not bring too serious impact on the patient’s body, but cause lymph node enlargement of the primary disease is usually very serious, there may be serious consequences, it is recommended that patients with lymph node enlargement should be promptly to the regular hospital for examination and treatment.