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Left-Right symmetric model (LRSM) has been an attractive extension of theStandard Model (SM) which can address the origin of parity violation in the SMelectroweak (EW) interactions, generate tiny neutrino masses, accommodate darkmatter (DM) candidates and provide a natural framework for baryogenesis throughleptogenesis. In this work we utilize the minimal LRSM to study the recentlyreported DAMPE results of cosmic $e^+e^-$ spectrum which exhibits a tentativepeak around 1.4 TeV, while satisfying the current neutrino data. We propose toexplain the DAMPE peak with a complex scalar DM $\chi$ in two scenarios: 1)$\chi\chi^* \to H_1^{++}H_1^{--} \to \ell_i^+\ell_i^+\ell_j^-\ell_j^-$; 2)$\chi\chi^* \to H_{k}^{++}H_{k}^{--} \to \ell_i^+\ell_i^+\ell_j^-\ell_j^-$accompanied by $\chi\chi^* \to H_1^+ H_1^- \to \ell_i^+ \nu_{\ell_i} \ell_j^-\nu_{\ell_j}$ with $\ell_{i,j}=e,\mu,\tau$ and $k=1,2$. We fit the theoreticalprediction on $e^+e^-$ spectrum to relevant experimental data to determine thescalar mass spectrum favored by the DAMPE excess. We also consider variousconstraints from theoretical principles, collider experiments as well as DMrelic density and direct search experiments. We find that there are ampleparameter space which can interpret the DAMPE data while passing theconstraints. Our explanations, on the other hand, usually imply the existenceof other new physics at the energy scale ranging from $10^7 {\rm GeV}$ to$10^{11} {\rm GeV}$. Collider tests of our explanations are also discussed.

Scalar dark matter explanation of the DAMPE data in the minimal Left-Right symmetric model