Based on the self-developed program，a numerical simulation method of the two-phase turbulent flow for ventilated cavity near wall of the flat plate is developed，and the gas-liquid two-phase flow for double-hole ventilated cavity near wall of the flat plate is simulated and analyzed. The results show that the numerical method established in this paper can get rid of the dependence on the traditional RANS turbulence model，and can capture the instability of gas-liquid interface better. The simulation results are in good agreement with the experimental results. The mixing and fusion process of double-hole ventilated cavity can be divided into three stages：independent and stable development stage，preliminary mixing and fusion stage and full fusion stage. The development and evolution of ventilated cavities are related to the vortex structure，which means that the shear layer vortices and counter rotating vortex play important role in the mixing process.
