A device for producing pulsating flow named vane-type pulsation generator was designed and experimentally studied. The experimental results demonstrated that pulsation generator, which produced pulsation effects on steady flow could obtain pulsating flow by means of on-and-off periodical flow interrupter. The pulsation effects for this type of pulsating flow generator had little reduction and could transfer along the channel. Pulsation amplitude changing with pulsation frequency was observed. It could impact on the flow velocity to induce pulsation generator to the experimental system. The relationship between pulsation frequency and flow velocity was non-linear.