Let K denote the contact Lie superalgebra K(m, n; t) over a field of characteristic p > 3, which has a finite Z-graded structure. Let T K be the canonical torus of K, which is an abelian subalgebra of K 0 and operates on K −1 by semisimple endomorphisms. Utilizing the weight space decomposition of K with respect to T K , we prove that each skew-symmetric super-biderivation of K is inner.