The present invention provides a recombinant protein, which is selected from the group consisting of: (a) a recombinant protein comprising an amino acid sequence of a protein transduction domain, an amino acid sequence of a J domain and an amino acid sequence of SEQ ID NO.: 2； and (b) a recombinant protein comprising an amino acid sequence of a thioredoxin, and an amino acid sequence of SEQ ID NO.: 5. Recombinant proteins of the present invention may be used as a vaccine for canine parvovirus.本發明提供一種重組蛋白，其選自下列所組成的群組：(a)一種重組蛋白，其包含一蛋白轉導結構域之胺基酸序列、一J結構域之胺基酸序列以及SEQ ID NO.：2之胺基酸序列；及(b)一種重組蛋白，其包含一硫氧還原蛋白之胺基酸序列，以及SEQ ID NO.：5之胺基酸序列。本發明之重組蛋白可作為犬小病毒疫苗。
