The present application relates to a fusion protein, its related immunoconjugate, nucleic acid molecule, carrier, composition, cell and preparation method, and their use in the preparation of drugs. The fusion protein of the application can be used for treating tumor and/or autoimmune diseases.本申請涉及一種融合蛋白、與其相關的免疫綴合物、核酸分子、載體、組成物、細胞和製備方法,以及它們在製備藥物中的用途。本申請所述的融合蛋白能夠用於治療腫瘤和/或自體免疫疾病。