The exhaustion of coal resources in the shallow part has made deep mining enter into the implementation stage, however the geological environment of deep coal seam is relatively complex; the mining process is threatened by confined water in the basal limestone while the key point of solving water inrush is to check the fracture mechanism of floor strata. A large number of scholars both at home and abroad have explored this issue and the geophysical method has achieved a good effect in probing floor strata. Based on research status analysis of stope floor strata fracture, this paper stated the technological principles of electrical method, electromagnetic method, seismic wave method and new technology-Brillouin Optic Time-Domain Reflectometer (BOTDR) and their application status in probing basal deformation and fracture, and analyzed technical features of different probing methods. It revealed the influencing factors and deficiencies in their application, proposed the idea of total space, multiple parameters, real-time monitoring of stope floor, developed integrated dynamic monitoring alarming system of basal stratum and looked into the development direction of rock water detection technology during the process of coal mining floor strata deformation and fracture.