Micro-nano mechanical resonators are believed to be an ideal platform for developing on-chip signal processing devices, in which various kinds of physical fields can be transduced to mechanical phonons for phonon-based information processing. In such a strategy, control of phonon transferring between different mechanical resonators is essential for phonon-based information processing. By coupling two mechanical resonators for a two-mode mechanical system, although coherent phonon transferring between hybridized mechanical modes has been achieved recently, direct control over the effective coupling between disparate mechanical resonators is still desirable. Therefore, coherent control of phonons through Landau-Zenner-Stückelberg (LZS) interference was developed in an optomechanical system in this paper. The hybridization between two mechanical resonators was mediated using the effect of optical trapping, and a parametric driving field was applied through modulating the optical trap so that the system transvered the avoided-crossing point periodically to realize the LZS interference of phonons. The studies demonstrate that coherent phonon transferring between two disparate mechanical resonators can be achieved through the LZS interference when the on-resonance condition is satisfied. The authors' research provides an efficient scheme for high-efficient transferring of phonon-based information in real space.