Inordertodeterminetheinfluenceofparticleplacementangleandacousticfre-quency on the acoustic wake effect， the lattice Boltzmann method was used to simulate thesettlement of two particles in the acoustic field， and tuning fork trajectories similar to theexperimental results were found， which verified the correctness of the method and the calcu-lation model applied to the acoustic wake simulation.The agglomeration or repulsion of twoparticles in the acoustic field due to the wake effect is simulated under the condition of neg-lecting gravity.The results show that the attraction or repulsion will occur between particleswith different angles to the direction of soundfield under the action of horizontal sinusoidalsoundfield.Particles with angles between O and 35 degrees have attraction in the X direc-tion， while particles with angles between 35 and 90 degrees have repulsion in the X direc-tion， and the attraction in the X direction is stronger than the repulsion； particles with an-gles between O and 38 degrees have attraction in theY direction， and particles with anglesbetween 38 and 90 degrees have repulsion in theY direction， while particles with angles be-tween38 and 90 degrees have attraction in theY direction.The effect of induction is muchsmaller than that of rejection.Sound frequency has an effect on wake agglomeration veloci-ty.The higher the frequency of soundfield， the longer the agglomeration time and the lowerthe agglomeration speed.