Lymph node tumors are usually referred to as lymphomas, and the main pre-lymphoma symptoms are painless lymph node enlargement and unexplained fever. Lymphoma is a malignant tumor originating from lymph nodes and lymphoid tissues. The etiology and pathogenesis have not been fully clarified. Symptoms in the early stage mainly include painless lymph node enlargement and unexplained fever. 1. Painless lymph node enlargement: enlargement of lymph nodes in neck and supraclavicular lymph nodes is more common, inguinal and axillary lymph nodes can also be seen, which is painless, and can be progressively enlarged, even fused into a mass, and can be adhered to the surrounding tissues. 2. Unexplained fever: persistent fever with no obvious cause. It is recommended that patients should consult the hospital in time when symptoms such as enlarged lymph nodes and fever occur, and undergo relevant examinations to exclude lymphoma and other related diseases.