The invention discloses a three-dimensional geomechanical model test system for intelligent coal mining in the field of mining engineering. Mining of a coal bed is simulated by moving a sliding structure; the three-dimensional geomechanical model test system for intelligent coal mining comprises a power part, a sliding part and a platform; the power part is connected to the back side of a counter-force frame; the sliding part comprises an upper partition plate, a sliding device and a lower partition plate; the platform is connected to the back side of the counter-force frame; and the upper surface of the platform is leveled with that of the lower partition plate. The system is simple in device structure, easy and convenient to use and high in reliability.