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The inner flow of fluidic component with small offset ratio was measured by using particle image velocimetry (PIV). The velocity distribution of fluidic component and position of attachment point were obtained to provide reference for the numerical simulation in the future. The effects of flow rate, offset ratio, distance of air entrance hole, and cover size on the inner flow of fluidic component were analyzed and compared with numerical results. The results showed that in a certain range, the flow rate and working pressure had no effect on the distance of attachment point. The attachment point ratio increased with the increasing offset ratio. The relation equation of attachment point ratio and offset ratio was found. The distance of attachment point became shorter firstly then longer with the increasing distance of air entrance hole. The offset ratio and cover size were sensitive to offset jet flow.