In clinical practice, lumps in the armpit are not necessarily lymphoma, but may be lymphadenitis in the armpit. If patients have axillary lymphadenitis, they will show swelling of axillary lymph nodes, sometimes the lymph nodes will also show pressure pain, and some patients will even show fever. It is suggested that patients should go to hospital for consultation in time, and then be given anti-infection treatment under the guidance of professional doctors. During the treatment period, patients should pay attention to observe whether the axillary lymph nodes appear to shrink, whether the pain is relieved, and whether the symptoms of fever have disappeared. Even if the patient’s axillary lymphadenitis is cured, he or she still needs to go to the hospital for regular follow-up examinations in order to benefit their health.