Mediastinal lymph node enlargement is serious or not, to be analyzed on a case-by-case basis, bacterial infection or viral infection caused by less serious, if it is caused by blood system diseases or malignant tumors, it is more serious, as follows:1. Less serious cases: If it is caused by bacterial infection or viral infection, generally less serious, you can go to the hospital to improve the relevant examination, give drugs for treatment, and at the same time need The diet structure should be adjusted appropriately, not to drink alcoholic beverages, not to eat too spicy food, and not to eat pickled food, etc. Fresh fruits and green vegetables can be consumed appropriately, and low-fat high-quality protein should be consumed appropriately to improve the body’s resistance. 2. More serious cases: If it is caused by blood system diseases, such as lymphoma, this is more serious, and chemotherapy, targeted drug therapy, Chinese medicine and other treatments should be given. therapy, Chinese medicine and other treatments. If it is caused by lymph node metastasis of malignant tumor, it is also more serious and needs active tumor removal, together with other treatments, etc.