The common malignant tumors in the neck are as follows: 1. Malignant tumor of thyroid gland. Patients can find out through ultrasound examination of thyroid gland that the border of thyroid lesion is not clear, echogenicity is not uniform, texture is hard, mobility is poor, and there is obvious blood flow signal, calcification, aspect ratio is greater than the first malignant sign. At this time, patients need to perform surgery to remove thyroid tumor as soon as possible and perform lymph node dissection at the same time, most patients can achieve better treatment effect after surgery. 2. Patients with malignant tumor of esophagus may also show metastatic mass in the neck, at this time, patients can improve gastroscopy and find obvious thickening of the wall of esophagus with lumen narrowing or active bleeding. At this time, patients need to perform esophageal malignant tumor resection and lymph node dissection as soon as possible, and give chemotherapy and radiotherapy after surgery, most patients can achieve certain treatment effect.