In order to solve the disadvantages of manual inspection of belt conveyor in coal mine, a belt conveyor inspection robot system is developed, which can realize all-round dynamic inspection and fault identification of belt conveyor and its operating environment in coal mine, and reduce the accident rate. The composition, principle and function of the system are introduced in detail. Through typical examples, the inspection effect of inspection robot is summarized and analyzed. The application results show that the inspection robot system is suitable for belt conveyor inspection under long-distance and complex working conditions, and it is of great significance to realize intelligent construction of coal mines.