Using the theory of linear entropy and entropy squeezing, the dynamics of the entanglement and entropy squeezing of the atom driven by classical fields interacting with field by employing the dressed- state representation is examined. The influence of the photon number of Fock state, coupling coefficient of atoms and the classical driving field, and the detuning between atomic transition frequency and classical driving field frequency on the entanglement and entropy squeezing of the atom is discussed. It is shown that the evolution of linear entropy and entropy squeezing exhibits periodic behavior. The maximum value of the linear entropy increases as the photon number of Fock state, the coupling coefficient of atom and the classical driving field and the detuning increase. The high- degree squeezed and longtime atomic squeezing state can be created by controlling the coupling coefficient of atoms and the classical driving field and the detuning. The proposal may provide a theoretical way to control and manipulate the entanglement and entropy squeezing.