Laser interferometry is widely used in space-borne gravitational wave detection missions. Precision pointing control of inter-satellite laser links is a key technology to ensure measurement accuracy. Due to complex ground environments and dynamic simulation conditions， achieving on-orbit equivalent verification of pointing jitter suppression methods presents significant challenges. To address this issue， we propose a ground-based semi-physical experiment method based on real-time hybrid simulation （RTHS）. The physical system， spacecraft dynamics， payload models， and space environmental disturbances are integrated into a unified framework for consideration. Furthermore， a pointing controller is designed using the H_∞ robust control， and a semi-physical experimental system is developed for validation. Experimental results demonstrate that under dynamic simulation conditions， the system achieves effective suppression of laser pointing jitter by up to three orders of magnitude within the frequency range of 1 mHz–0.1 Hz. In an atmospheric environment， the control accuracy of the laser pointing jitter reaches . This work validates the proposed technical approach of dynamic equivalent simulation and provides an extensible architecture to further support the research of the entire process of laser link construction in the future.