Abstract: Based on the research of airflow movement characteristics in the grinding zone， FLUENT was used to build the finite element model to simulate and calculate pressure distribution and velocity distribution on different working conditions. Combined with the grinding experiment， influence factors of airflow movement on the integrity of the work piece surface were studied and the simulation results were verified. The results indicated that airflow movement in the grinding zone impedes the grinding fluid into the grinding zone. When the injection position of grinding fluid was close to the area with the same direction of wheel rotation linear velocity and airflow velocity， the surface quality of the work piece improved， the utilization rate of grinding fluid and the green degree of grinding raised.

Key words: airflow movement, grinding fluid, green degree, simulation, FLUENT