Abstract: Experimental research on rock crack propagation is currently an important means of exploring the process of rock fracture, and shear crack propagation is one of the basic propagation modes in the rock fracture process, which is of great significance for exploring the safety and stability of engineering rock masses and oil and gas extraction. To address the current situation where traditional monitoring methods for shear crack propagation experiments are too singular and capture limited information, failing to effectively meet the requirements of experimental research on rock shear fracture laws, this paper upgrades and renovates the equipment and systematically constructs a real-time monitoring experimental platform for rock shear crack propagation. The development not only achieves full-field monitoring of the internal and external evolution process of rock shear fracture, but also improves the utilization efficiency of individual samples. Moreover, it reduces the difficulty of experimental operations and effectively shortens the preparation time for experiments. These achievements have been widely applied in teaching and scientific research practice, achieving significant results.