This study investigates the performance of a floating wind-wave power generation platform, integrating wave energy converters (WECs) onto a semi-submersible floating platform. The research focuses on the power performance and dynamic response of WECs under different arrangements and hydrodynamic models in the South China Sea. A multi-body constrained motion model in the frequency domain is established to analyze the hydrodynamic interactions and power generation mechanisms. The results show that a single point absorber placed on the platform achieves exceptional peak performance, but its performance under real sea conditions is suboptimal. Increasing the number of point absorbers improves the stability of the hybrid system. Array arrangements of point absorbers lead to multiple peaks in power performance, with selected configurations showing significantly higher average power generation at specific frequencies compared to a single point absorber. The study also validates the frequency-domain model using time-domain simulations and optimizes the parameters of the Power Take-Off (PTO) system for different arrangements. Finally, the expected power output of various models in the South China Sea is calculated, revealing the performance under real sea conditions. The findings highlight the importance of array arrangements and the influence of wave angles on power generation, suggesting that the optimal sea conditions for practical engineering design should be close to the peak frequencies observed in the analysis.This study investigates the performance of a floating wind-wave power generation platform, integrating wave energy converters (WECs) onto a semi-submersible floating platform. The research focuses on the power performance and dynamic response of WECs under different arrangements and hydrodynamic models in the South China Sea. A multi-body constrained motion model in the frequency domain is established to analyze the hydrodynamic interactions and power generation mechanisms. The results show that a single point absorber placed on the platform achieves exceptional peak performance, but its performance under real sea conditions is suboptimal. Increasing the number of point absorbers improves the stability of the hybrid system. Array arrangements of point absorbers lead to multiple peaks in power performance, with selected configurations showing significantly higher average power generation at specific frequencies compared to a single point absorber. The study also validates the frequency-domain model using time-domain simulations and optimizes the parameters of the Power Take-Off (PTO) system for different arrangements. Finally, the expected power output of various models in the South China Sea is calculated, revealing the performance under real sea conditions. The findings highlight the importance of array arrangements and the influence of wave angles on power generation, suggesting that the optimal sea conditions for practical engineering design should be close to the peak frequencies observed in the analysis.