  We have studied entanglement entropy and Husimi $Q$ distribution as a tool to
explore chaos in the quantum two-photon Dicke model. With the increase of the
energy of system, the linear entanglement entropy of coherent state prepared in
the classical chaotic and regular regions become more distinguishable, and the
correspondence relationship between the distribution of time-averaged
entanglement entropy and the classical Poincar\'{e} section has been improved
obviously. Moreover, Husimi $Q$ distribution for the initial states
corresponded to the points in the chaotic region in the higher energy system
disperses more quickly than that in the lower energy system. Our result imply
that higher system energy has contributed to distinguish the chaotic and
regular behavior in the quantum two-photon Dicke model.
