The present invention provides a recombinant adeno-associated virus (rAAV) vector for treating a blood coagulation-related disease to provide a novel gene therapy means for hemophilia. The virus vector comprises a virus genome comprising a liver-specific promoter sequence and a polynucleotide sequence encoding a genome editing means operably linked to the promoter sequence, wherein the genome editing means is (a) a means comprising CRISPR/Cas9 composed of a Cas9 protein and a guide RNA (gRNA) and a repair gene, or (b) a means comprising CRISPR/Cas9 composed of a Cas9 protein and a gRNA, and the gRNA comprises a nucleotide region complementary to a part of a region related to expression of a disease-related protein on the genome of a patient and a region that interacts with the Cas9 protein.
