The present disclosure provides a method of treating hemophilia A in a human subject in need thereof comprising administering to the subject a chimeric polypeptide comprising (i) a factor VIII (FVIII) protein and (ii) a von Willebrand factor (VWF) fragment comprising a D' domain of VWF and a D3 domain of VWF at a dosing interval.本公開提供一種治療有需要的人類個體的A型血友病的方法,該方法包括以給藥間隔向該個體施用嵌合多肽,該嵌合多肽包含(i)因子VIII(FVIII)蛋白,和(ii)包含VWF的D'域和VWF的D3域之馮威里氏因子(von Willebrand factor,VWF)片段。