<p>The ultrasonic-assisted spinning process (UASP) presents a promising solution for integrally manufacturing lightweight ribbed cylindrical parts. Yet, insufficient filling and uneven height are the critical problems restricting the high-quality manufacturing of ribbed cylindrical parts. This study introduces a novel optimization strategy combining multi-objective parameter optimization with real-time ultrasonic amplitude regulation to address those challenges. Initially, the sensitivity of key process parameters (ultrasonic amplitude, feed rate, and spindle speed) was systematically analyzed using the Morris method. It was found that the feed rate exerts the most significant influence on rib height, while the ultrasonic amplitude and spindle speed show competitive effects on different quality indicators. Due to the mutual constraints of the material flow characteristics of longitudinal and transverse ribs, it is difficult to obtain the optimal process parameters that can simultaneously improve the forming quality of both ribs. Subsequently, the multi-objective parameter optimization was conducted for longitudinal and transverse ribs by the NSGA-Ⅱ algorithm, improving the rib height and forming uniformity. On this basis, an optimized forming method was developed based on the region-specific control characteristic, which utilized the real-time response characteristics of ultrasonic vibration. The ultrasonic amplitude is adjusted in real-time according to the change of the forming region. Finally, the proposed method was validated through experiments, achieving the equal-height forming of longitudinal and transverse ribs.</p>