Abstract: With the increasing depth of underground coal mining, deep rock stress constantly complicated, especially in soft rock roadway. Combining Tangshan Kailuan Coal Mine Group, through the soft rock under conditions of T1493 and T1493 Bypass Roadways as the research object, through in-site geological structure detection, the evaluation of engineering geomechanics was made. The comprehensive methods, which included theoretical analysis and numerical simulation methods were applied here to analyze the disability mechanism of soft rock roadway in high stress condition. A reasonable supporting design was putted forward to ensure the safety in mining. Our research has provide to achieve a scientific effects and could provide a technical reference for other mines in similar geological conditions.