  The varietal hypercube $VQ_n$ is a variant of the hypercube $Q_n$ and has
better properties than $Q_n$ with the same number of edges and vertices. This
paper proves that $VQ_n$ is vertex-transitive. This property shows that when
$VQ_n$ is used to model an interconnection network, it is high symmetrical and
obviously superior to other variants of the hypercube such as the crossed cube.
