The entanglement dynamical behaviors of two two-level systems,which respectively interact with a single-mode quantum light-cavity field,were investigated. The Landau-Zener model driven by the classical out-field was studied. By means of the transformed rotating-wave approximation(TRWA ),effects of the initial entanglement,coupling strength between two levels and parameter of the classical out-field on the entanglement evolution and transfer of two two-level systems were analyzed by numerical calculation. The results show that when choosing the appropriate condition,the initial entanglement can be perfectly transferred into the light-cavity fields. So the biggest entanglement transfer between the two-level systems and light-cavity fields can be realized easily.