Too much lymph in the neck may be caused by microbial infection, tuberculosis or tumor disease. 1. Microbial infection: in order to resist bacterial, viral and other microbial infections, the lymph nodes will proliferate and become larger to strengthen the immune system, and the lymph nodes will return to normal after treatment with appropriate antibiotics or antiviral drugs. 2. Tuberculosis: Tuberculosis caused by Mycobacterium tuberculosis will lead to the increase in the size of lymph nodes in the neck, which should be treated with anti-tuberculosis drugs such as isoniazid and rifampicin. 3. Tumor disease: lymphoma, leukemia and other lymphocyte diseases or lymphatic metastases of thyroid tumor, breast cancer, lung cancer and so on may lead to lymph node hyperplasia and enlargement. Pathological biopsy should be carried out in time to clarify the nature of the lesion, and then radiotherapy or targeted therapy should be carried out according to the doctor’s prescription. It should be noted that when the above symptoms occur, one should go to the hospital in time for examination and treatment under the guidance of the doctor.