I. Treatment Generally speaking, if the lymph nodes are mildly enlarged, single or several scattered, soft, no pressure pain, no adhesions and no other symptoms, treatment is not necessary for the time being, but the changes must be closely observed. If they do not increase in size or gradually decrease in size, they can continue to be observed; if they increase in size or increase in size, they must be seen by a doctor. If the enlarged lymph nodes are larger and more numerous, especially in bunches, gradually increasing or rapidly increasing, adhering to the surrounding tissues, with enlarged lymph nodes in other parts (such as underarm), accompanied by other symptoms such as fever, anemia, wasting, etc., all of them should immediately go to the hospital for relevant examination (even lymph node biopsy) in order to achieve timely diagnosis and treatment. Prevention 1. Adopt good living habits. 2, maintain a good state of mind, stable emotions, have a healthy diet, usually eat more fruits and vegetables, etc., to improve self-immunity. 3.People who must work at heavy fumes, try to protect themselves, such as wearing a mask, going out regularly to get some fresh air, and having a check-up at least once a year, etc. 4, . Stay away from smoke, alcohol, drugs, radiation, pesticides, noise, volatile harmful gases, toxic and harmful heavy metals, etc.