  Large High Altitude Air Shower Observatory~(LHAASO) opens the window of
ultra-high-energy~(UHE) photon detection, broadens the path of testing basic
physical concept such as Lorentz symmetry, and brings possibility of potential
high-energy physical phenomenon research such as photon decay and electron
decay. Currently, the UHE photons from LHAASO observation set strict
constraints on photon and electron Lorentz symmetry violation~(LV) effects. To
obtain a global impression of the photon-electron LV parameter plane, we make a
detailed analysis for photon decay and electron decay. Our discussion gives the
corresponding decay thresholds and energy-momentum distributions in different
LV parameter configurations. We get corresponding constraints on photon LV
parameter, electron LV parameter and the photon-electron LV parameter plane
from LHAASO observation. For the space allowed for LV effect, that is beyond
relativity, we also provide corresponding boundaries from LHAASO observation.
