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The zeroth-order general Randi\'{c} index $R^{0}_{a+1}$ of an $n$-verticesoriented graph $D$ is equal to the sum of $(d^{+}_{u_i})^{a}+(d^{-}_{u_j})^{a}$over all arcs $u_iu_j$ of $D$, where we denote by $d^{+}_{u_i}$ the out-degreeof the vertex $u_i$ and $d^{-}_{u_j}$ the in-degree of the vertex $u_j$, $a$ isan arbitrary real number. In the paper, we determine the orientations of cactiwith the maximum value of the zeroth-order general Randi\'{c} index for $a\geq1$.

Maximum zeroth-order general Randi\'{c} index of orientations of cacti