Electron energy distribution functions (EEDF) in a XeCl laser have been obtained by solving the time‐dependent Boltzmann equation coupled to the circuit equations, plasmachemistry, and photon kinetics. The results show that in some zones of temporal evolution, EEDF does not instantaneously follow the alteration of electric field. Moreover, electron‐electron and superelastic collisions play a non‐negligible role in affecting EEDF and related quantities.