The causes of mesenteric lymphadenitis are mainly seen in infections, intestinal abnormalities, and lymph node metastases, as follows: 1. Infections: Lymphadenitis is most likely caused by bacteria, and may also be caused by viruses. It is necessary to go to the hospital to improve relevant tests, such as blood tests, C-reactive protein, and ultrasound. If bacterial infection is considered, antibiotics should be given for treatment. If it is considered to be caused by viral infection, it needs to be treated with antiviral drugs, and at the same time, it can be treated with traditional Chinese medicine. 2.Intestinal abnormalities: It may be caused by abnormal diseases in the intestine, such as acute appendicitis, intestinal overlap, intestinal torsion, etc. It needs to go to the hospital for abdominal CT and laboratory tests to clarify, and according to the results, surgery may be needed. 3.Lymph node metastasis: It may be caused by malignant tumors. Lymph node metastasis: it may be caused by lymph node metastasis of malignant tumor, which requires further improvement of tumor markers and colonoscopy for clarification, and alcohol cannot be consumed during treatment.