Multiple swollen lymph nodes are commonly caused by the following: i. Swollen lymph nodes caused by infectious lesions, such as lung infection, acute pancreatitis, acute gangrenous cholecystitis, etc. Bacteria can spread through the blood to the lymph nodes throughout the body, causing swelling of lymph nodes. Anti-infection treatment needs to be strengthened, and if necessary, surgery to remove the infected lesions can control the inflammation faster and make the enlarged lymph nodes subside slowly. Multiple lymph nodes enlargement caused by malignant tumor, such as malignant tumor of stomach, malignant tumor of liver, malignant tumor of colorectum, etc. Surgery is needed to remove the tumor lesions and lymph node dissection as soon as possible. Based on the results of postoperative examination, the patient will decide whether chemotherapy or radiotherapy is needed. In general, the prognosis of lymph node enlargement caused by malignant tumor is relatively poor and the probability of recurrence is high.