Fan nozzles are widely used in cleaning equipment for cleaning with a large range of features. By using Fluent software to resolve jet speed, striking force and flow characteristics, cleaning performance of fan nozzle was intuitively known and analyzed. The simulation results show that along with the relative offset of Vshaped notch fan nozzle increasing, the striking force is reduced. As the halfangle of the slots increasing, the striking force is increased. The result of simulation has provided a useful reference to select and design of fan nozzle.