  We theoretically study electrical responses of magnetization in Weyl
semimetals. The Weyl semimetal is a new class of topological semimetals,
possessing hedgehog type spin textures in momentum space. Because of this
peculiar spin texture, an interplay of electron transport and spin dynamics
might provide new method to electrical control of magnetization. In this paper,
we consider the magnetically doped Weyl semimetals, and systematically study
current- and charge-induced spin torque exerted on the local magnetization in
three-dimensional Dirac-Weyl metals. We determine all current-induced spin
torques including spin-orbit torque, spin-transfer torque, and the so-called
$\beta$-term, up to first order with respect to spatial and temporal derivation
and electrical currents. We find that spin-transfer torque and $\beta$-term are
absent while spin-orbit torque is proportional to the axial current density. We
also calculate the charge-induced spin torque microscopically. We find the
charge-induced spin torque originates from the chiral anomaly due to the
correspondence between spin operators and axial current operators in our model.
