Immunohistochemistry of lymph node biopsy is used to differentiate between benign and malignant lymph nodes, as well as to determine the type of disease, and to adopt appropriate treatment plan according to the condition. If a lymph node lesion occurs, it may be benign, but it may also be malignant, such as lymphoma or lymph node metastasis of malignant tumors, and it is often necessary to take a biopsy of the tissue to distinguish the benign or malignant nature of the lymph node lesion. If the lesion is benign, there is often no need to do further examination, and regular review is sufficient; if it is malignant, after determining the type of disease, it is necessary to actively take the appropriate program for treatment. It is recommended to actively cooperate with doctors to take examinations, and once the diagnosis of lymphoma is confirmed, actively cooperate with doctors to take treatments to avoid further progression of the disease.