An experimental device was designed to investigate the effects of changes in insertion jet depth and frequency of intermittent water dispersion needle on the hydraulic performance of the sprinkler, respectively. The results show that, under the same working pressure, the sprinkler assembled with intermittent water dispersion needles can improve the throw radius by at least 20% compared to the sprinklers assembled with fixed water dispersion needles. Gradually increasing the depth of insertion results in more water being distributed near the sprinkler, and less water reaching the middle and end of the throw radius. Increasing the frequency of insertion jets initially reduces water near the sprinkler, but then leads to an increase. However, water in the middle of the throw radius keeps decreasing, increasing towards the end of the throw radius. By adjusting the frequency of insertion jets, it’s possible to address problems related to excessive water application rates at the end of the throw radius.