In this paper, the energy phase method is applied to analysis the multipulse orbits and homoclinic trees of the nonlinear vibration absorber model under 1〖DK〗∶0 internal resonance and the first order primary resonance. Firstly, the nonlinear governing equations are transformed to the standard form of nearintegrable Hamiltonian systems. Moreover, the unperturbed dynamics and perturbed dynamics are examined. The influence of dissipative factor and the phase shift on the pulse number and layer radii of the multipulse orbits of system are analyzed. The results show that energy is transferred from the highfrequency mode to the lowfrequency mode in these systems.