Abstract: As the geological exploration in old mines periphery is developed quickly, fully hydraulic drill rig will become the main rig for future deep drilling. In order to realize scientific drilling, digital drilling, and ensure the drilling work safety, drilling parameter monitoring system matching to fully hydraulic drill is studied. The drilling parameter monitoring system is module-designed according to the characteristics of hydraulic drill, and can not only real-timely monitor, display and store drilling parameters, but also have some significant advantages such as forecasting hole accident and data wireless transmission. The drilling practice show that the drilling parameter monitoring system has stable and reliable performance, its technology is advanced and effect is good, can satisfy the need of deep drilling.