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This paper investigates the performance of shear-mode piezoelectric print head.The print head was fabricated by Micro-Electro-Mechanical Systems (MEMS) process.The geometry of the print head is demonstrated in figure 1.The depth ,width and orifice diameter of the micro-channel are 100 μm, 400 μm and 30 μm, respectively.In order to obtain proper condition for single drop generation, we applied the numerical simulation by commercial CFD software-CFD-ACE+ 2006.The goal of this study is to find out the optimal condition for print heat manipulation.Initial results have shown that the frequency and voltage are the primary control parameters for injecting single drop.