Abstract: As an advanced measurement technique in high-precision flow field diagnostics for fluid mechanics, stereoscopic particle image velocimetry (SPIV) enables three-dimensional visualization of complex flow dynamics, and its application in experimental teaching can enhance students' learning engagement. This experimental teaching platform visualizes rotating flow fields and reconstructs their three-dimensional velocity fields through data acquisition and image post-processing analysis. Key observations indicate that increasing the impeller rotational speed elevates the overall circumferential velocity within the circular tube while yielding a more uniform velocity distribution. Near the tube wall, the circumferential velocity decreases axially downward, whereas it increases in the central region. The radial cross-sectional velocity distribution demonstrates continuous smooth gradients without stepwise variations, and no axial velocity misalignment occurs. By integrating this platform, students gain insights into advanced flow measurement technologies while developing hands-on skills, analytical thinking capabilities, and improved academic performance through systematic experimentation.