The tests to confirm the diagnosis of lymphoma are as follows: 1. Admission to the hospital to receive detailed inquiries from doctors, such as whether there are symptoms such as fever, sweating and weight loss recently; 2. Need to check whether there is enlargement of lymph nodes and subcutaneous masses; 3. Patients need to further improve relevant tests, such as blood routine, liver and kidney function, lactate dehydrogenase and bone marrow and flow cytology; 4. Cooperate with imaging tests, such as MRI and PET-CT; 5. Pathological diagnosis, biopsy of lymph nodes is needed to analyze their pathological subtypes according to immunohistochemistry, gene rearrangement and even chromosomal examination.