Pressed ventilation in heading face is actually a restrained wall-attached jet ventilation in confined space. In this paper, based on hydrcxlynamic and jet theory, the turbulence k-ε model of restrained wall-attached jet ventilation in heading face is set up and calculation boundary is analyzed. Combining with practice, and using PHOENICS3. 4 software of computational fluid dynamics (CFD), three - dimensional airflow field of the jet ventilation in heading face is simulated. The flow field characteristics such as the flow field zoning, the starting segment of jet, the attaching course of jet and the changing pattern of jet velocity are obtained by numerical simulation. According to result of numerical simulation, there are four zones in heading face, i. e. wall-attached jet zone, impact jet wall-attached zone, back flow zone and eddy zone. The starting segment length of attached jet is shorter than thar of free attached jet. After wall-attached jet formed completely, the axis velocity of wall is higher than that in air outlet. The result of numerical simulation agrees with that of experiment, which provides a dependable basis for further study of the air mass transport process, the reason of methane accumulation and the efficiency of air displacement in heading face.