To disclose the different deformation features of roadway affected by strip mining, in this paper through the displacement field measurement and the physical simulation of one strip mining roadway, based on the key stratum theory and roof movement theory, its deformation is analyzed and studied. Some deformation features that have not been discovered before are found. There are two peaks of displacement in strip mining roadway, and their lag distance is longer. So, the support of the roadway will be reinforced before the second mining influence come, which can provide valuable reference for th...