Anchor rods are an important reinforcement and support method in geotechnical engineering. After the anchor rod is fixed, it will generate pre-stress. But when the rock mass structure changes, the prestressed force of the anchor rod will change. This article develops a wireless intelligent anchor rod, which is applied to the reinforcement and support of tunnel rock mass. The principle and structure of intelligent anchor rods were elaborated in detail, and the actual product was applied to a large tunnel. The results show that the intelligent anchor rod has a good effect, not only strengthening the rock mass, but also monitoring the health status of tunnel rock mass in real-time