Based on deep roadway deformation instability problem, deep roadway support form of coal mining in our country was analyzed by numerical simulation software, it was considered that the mine reason of roadway damage was that the supporting method and strength cannot prevent the high stress damage to the surrounding rock of deep roadway, the whole section supporting method to improve the surrounding rock control of deep roadway was put forward, the technology can strengthen the control of deep roadway surrounding rock, greatly reduce the floor heave, ensure the roadway safely using, reduce the maintenance costs of roadway and improve the economic benefits of mine.