In order to study the influence of submerged double spur dikes on the flow characteristics between them, this study measured the horizontal flow field within the area between the spur dikes using a particle image velocimetry (PIV) system, and analyzed the flow characteristics between the spur dikes. Results show that the ratio of the gap between the double spur dikes to the dike length d／B ( B is a constant) has a significant impact on the location of the eddy’s core between the spur dikes, the recirculation flow between the spur dikes, and the vorticity distribution around the heads of the spur dikes. When the value of d／B increases, the eddy’s core is closer to the line connecting the tips of the spur dikes, and the width of the recirculation zone increases. The zero velocity line changes linearly in the streamwise direction, and its slope decreases with the increase of d／B . The velocity in the recirculation zone changes significantly with the value of d／B . The maximum negative vorticity occurs near the head of the upstream spur dike, while the maximum positive vorticity occurs near the head of the downstream spur dike.