We measure the time-integrated CP asymmetry, A \(_{CP}\) , in \(D^0 \rightarrow K^0_{S} K^0_{S}\) decays reconstructed in \(e^{+}e^{-}\rightarrow c\bar{c}\) events collected by the Belle and Belle II experiments with the data sample corresponding to an integrated luminosities of 980 \(fb^{-1}\) and 427 \(fb^{-1}\) , respectively. The \(D^{0}\) decays are required to come from the flavor-conserving \(D^{*+}\rightarrow D^{0}\pi ^{+}\) decay ( \(D^{*+}\) tag) to determine the charm flavor at production time. A control sample of \(D^{*+}\) -tagged \(D^{0}\rightarrow K^{+} K^{-}\) is used to correct for production and detection asymmetries. The result, \(A_{CP}(D^{0}\rightarrow K^{0}_{S} K^{0}_{S} ) = (-1.4 \pm 1.3(stat) \pm 0.1(syst))\%\) , is consistent with previous determinations and with CP symmetry.