Lymph nodes that do not go away for a month may be due to inflammatory or cancerous factors, and should be analyzed in the hospital. 1. Inflammatory factors. If the lymph nodes are caused by certain inflammatory diseases, such as chronic lymphadenitis and tuberculous lymphadenitis, the treatment time is relatively long, and the enlarged lymph nodes are often encapsulated by fibrous tissues, so the inflammation is slow to subside, and the lymph nodes may even remain enlarged all the time, so the swelling may remain unresolved for a month, or may not even be able to subside all the time. 2. Cancerous factors. If the patient suffers from lymphatic metastasis of malignant tumors, lymphoma, lymphoblastic leukemia and other malignant diseases, it will also lead to long-term lymph node enlargement, and even have a tendency to gradually increase. At this time, we need to puncture biopsy, clear diagnosis and follow the doctor’s instructions for treatment. Lymph nodes do not go away for a month, need to actively consult the doctor, clear the cause of the disease for targeted treatment.