Lymphoma is also known as malignant lymphoma. Early symptoms of malignant lymphoma include painless and rapidly enlarging lumps, fever without obvious triggers and so on. 1. Painless and rapidly enlarging lumps: It is common to see rapidly enlarging lumps in axilla, groin and neck. The most common is enlargement of lymph nodes in the neck, which accounts for about 70% of all cases. 2. Unprovoked fever: it is common to have fever in the afternoon or evening, and the temperature of fever is usually not very high, and a few patients have fever over 38.5°C. It should be noted that there are many types of malignant lymphoma, with different invasive parts and different physical conditions of patients, resulting in different early symptoms. In order to detect tumor diseases in time, it is recommended to have regular medical checkups to reduce the adverse effects of the disease through “early detection, early diagnosis and early treatment”. If suspicious symptoms appear, one should go to the hospital in time and receive regular treatment under the guidance of the doctor.