Thymic peptides are a group of physiologically active peptides secreted by thymus tissue. The thymus peptide commonly used in clinical practice is a small molecule peptide with non-specific immune effect purified from the thymus of calves. It can promote the transformation of lymphocytes, enhance the phagocytic activity of macrophages, and has the function of regulating and enhancing the immune function of human cells. It can be used in the treatment of various primary or secondary T-cell deficiency diseases, certain autoimmune diseases, various diseases with low cellular immune function and adjuvant therapy of tumors, including: 1, various types of severe hepatitis, chronic active hepatitis and cirrhosis, etc. 2, herpes zoster, genital herpes, acromegaly, etc. 3, bronchitis, bronchial asthma, tuberculosis, etc. 4, various malignant tumors when radiotherapy can be applied simultaneously. 5.Lupus erythematosus, rheumatic and rheumatoid diseases, ankylosing spondylitis, Green-Barre syndrome, etc. 6.Aplastic anemia, leukemia, thrombocytopenia, etc. 7.Viral keratitis, viral conjunctivitis, allergic rhinitis, etc. 8.Precocious senility, menopausal syndrome in women, etc. 9.Multiple boils and facial skin acne, etc., psoriasis, lichen planus, squamous epithelial carcinoma and epithelial keratosis, etc. 10, children with congenital immunodeficiency, etc.