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The Large High Altitude Air Shower Observatory (LHAASO) is a next-generationobservatory for high energy gamma rays and cosmic rays with wide field of view.It will detect gamma rays with high sensitivity in the energy range from 300GeV to 1 PeV. Therefore, it is promising for LHAASO to search for thehigh-energy gamma rays induced by dark matter (DM) self-annihilation in dwarfspheroidal satellite galaxies (dSphs), which are ideal objects for the DMindirect detection. In this work, we investigate the LHAASO sensitivity to DMself-annihilation signatures for 19 dSphs and take the uncertainties on thespatial DM distribution of dSphs into account. We perform a joint likelihoodanalysis for the 19 dSphs and find that the LHAASO sensitivity to the DMannihilation cross section will reach $\mathcal{O}(10^{-24})\sim\mathcal{O}(10^{-25})$ cm$^3$ s$^{-1}$ at the mass scale above TeV for severalannihilation modes, which is larger than the canonical thermal relic crosssection by a factor of 10 to 100.

Prospect for dark matter signatures from dwarf galaxies by LHAASO