Lymphoma generally refers to malignant lymphoma and metastatic lymphoma. Symptoms of malignant lymphoma are manifested by painless swelling of lymph nodes, cough, diarrhea, fever, lethargy, anemia and so on, while the main clinical symptoms of metastatic lymphoma are swelling of lymph nodes, fever, poor mental state of one’s own, loss of appetite and so on. Patients with malignant lymphoma often have painless enlarged lymph nodes in the neck or clavicle, and the enlarged lymph nodes can be moved or intermingled with other lymph nodes, cough, chest tightness and cyanosis. With the development of the disease, the masses gradually increase in size, or invade other tissues and organs of the body, and become irritating dry cough, chest pain, diarrhea, fever, emaciation, blood in stool, anemia and other symptoms. Some patients may also have respiratory difficulties due to lymph node compression of esophagus. Patients with metastatic lymphoma usually show symptoms of primary lesions and enlarged lymph nodes, immune malfunction, leukocyte count thrombocytosis, skin infections are often prolonged ulceration, oozing, and systemic scattered skin thickening and desquamation may be formed. Other systemic symptoms such as fever, itching, night sweats (sweating abnormally after going to sleep and stopping after waking up), and lethargy and fatigue may also occur. Once the patient has symptoms suspected to be lymphoma, he should go to the hospital, clarify the cause of the disease, and take relevant treatment measures under the guidance of the doctor, do not self-medication.