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We show that the $\mathinner{\mathrm{GeV}}$ scale $\gamma$-ray excess fromthe direction of the Galactic Center can be naturally explained by the pairannihilation of Abelian vector dark matter (VDM) into a pair of dark Higgsbosons $VV \rightarrow \phi \phi$, followed by the subsequent decay of $\phi$into $\phi \rightarrow b\bar{b} , \tau \bar{\tau} $. All the processes aredescribed by a renormalizable VDM model with the Higgs portal, which isnaturally flavor-dependent. Some parameter space of this scenario can be testedat the near future direct dark matter search experiments such as LUX andXENON1T.

Higgs portal vector dark matter for $\mathinner{\mathrm{GeV}}$ scale $\gamma$-ray excess from galactic center