  The transition form factors of the semileptonic decay B_s into scalar
D_{s_0}(2317) meson is calculated in the framework of 3-point QCD sum rule. The
branching ratio is found to be ~10^(-3) for the (B_s -> D_{s_0}(2317) l nu_l)
(l=e,mu) decay, and 10^(-4) for the (B_s -> D_{s_0}(2317) tau nu_tau) decay,
respectively.
