Recently, the study of the surface acoustic wave (SAW) in an acoustic wave resonator (AWR) and its interaction with microscopic particles have caused more and more attention. This paper proposes a scheme to prepare entangled coherent states on two AWRs coupled with a nitrogen vacancy (NV) center ensemble. The two AWRs cross each other vertically, and the NV ensemble is located at the center of the crossing. We first discuss the excited-state mediated spin-phonon coupling taking place in a Λ-type three-level system for NV centers. Based on the large detuning interaction, we can achieve the maximally entangled coherent states of acoustic fields with a high probability of success and fidelity. The large detuning interaction can reduce the adverse impact from the decay process of the qubit excited state, thus improving the experimental feasibility of our scheme. The analysis results show that the fidelity of the final state can still be more than 90% under the condition of inhomogeneous qubit-resonator coupling strength. Moreover, under the existing experimental parameters, this scheme can be achieved within the coherence times of the NV centers and resonators. The NV centers in our scheme can be substituted by other emerging spin systems with spin defect centers such as quantum dots or superconducting systems, etc. Considering the macro-entangled coherent states have important applications in quantum information and quantum computing, the research results here have certain theoretical reference value for exploring the quantum acoustic properties and quantum information processing scheme with spin-phonon interaction system.