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The tentative 1.4 TeV excess in the $e^+e^-$ spectrum measured by The DArkMatter Particle Explorer (DAMPE) motivates the possible existence of one ormore local dark matter concentrated regions. In particular, Ultra-compact MicroHalos (UCMHs) seeded by large density perturbations in the early universe,allocated within ~0.3 kpc from the solar system, could provide the potentialsource of electrons and positrons produced from dark matter annihilation,enough to explain the DAMPE signal. Here we consider a UCMH with densityprofile assuming radial in-fall and explore the preferred halo parameters toexplain the 1.4 TeV "DAMPE excess". We find that typical parameter space ofUCMHs can easily explain the "DAMPE excess" with usual thermal-averagedannihilation cross section of WIMP. The fraction of dark matter stored in suchUCMHs in the Galactic-scale halo can be reduced to as small as $O(10^{-5})$,well within the current cosmological and astrophysical constraints.

Dark Matter Annihilation from Nearby Ultra-compact Micro Halos to Explain the Tentative Excess at ~1.4 TeV in DAMPE data