Interleukins are immunomodulators. It is a class of soluble proteins secreted by the cells of the immune system that play a major role in immunomodulation. There are mainly interleukin 2, interleukin 11 and so on. 1. Interleukin 2: It is an immunomodulator. It is mainly used in the biological treatment of tumor, especially for the treatment of renal cancer, malignant melanoma and carcinomatous thoracic and abdominal effusion, and can also be used in the comprehensive treatment of other malignant tumors and immunocompromised patients. Adverse reactions include fever, chills, muscle aches and pains, and is contraindicated in patients with a history of allergy to this ingredient. 2. Interleukin 11: It is an immunostimulant. Mainly used for solid tumors, non-myeloid leukemia chemotherapy after the treatment of Ⅲ, Ⅳ degree thrombocytopenia; solid tumors and non-myeloid leukemia patients. Adverse reactions include weakness, pain, chills, abdominal pain, infection, nausea, constipation, dyspepsia, bruising, myalgia, bone pain, nervousness and hair loss. If you need to use the drug, you need to apply it under the guidance of a medical professional. In case of discomfort, you should seek medical attention.