Lymph node enlargement for more than a month is still not good, may be related to chronic lymphadenitis, tuberculous lymphadenitis, may also be due to lymphoma, malignant tumor metastasis, immune disease not gained control, leukemia and other causes. 1. Inflammation: chronic lymphadenitis, tuberculous lymphadenitis resulting in enlarged lymph nodes, the treatment time is long, usually one month is difficult to inflammation subsides. 2. Malignant lesions: common such as lymphoma, lymphoblastic leukemia, lymphatic metastasis of malignant tumors resulting in lymph node enlargement, need to go through a systematic anti-tumor treatment, at this time the lymph nodes tend to be hard, poor mobility, no tenderness. The purpose of treatment is to fight against tumor, not to make the enlarged lymph nodes shrink. 3. Immune diseases are not under control: for example, systemic lupus erythematosus, which is not controlled in time, may cause patients to have enlarged lymph nodes in the neck, and without reasonable treatment, the symptoms of swelling will persist. Lymph node swelling for more than a month is still not good, may also be related to other factors, it is recommended to seek medical examination and treatment as soon as possible.