Abstract: Adopting multiple research methods such as theoretical analysis,numerical simulation,on-site practical testing and others to study the instability phenomenon of the coal rock interbedded roadway in Yanzishan Coal Mine.Based on the classical Mohr strength envelope theory,horizontal stress is the main force causing large-scale shear displacement,connectivity cracks,and surrounding rock failure occur in such roadway roofs;Finite element numerical simulation is used to simulate and analyze the deformation and failure process of surrounding rock in coal rock interbedded roadway;A coupled reinforcement support scheme combining prestressed anchor cables and anchor rods is proposed.The application results show that the support scheme significantly enhances the stability of the surrounding rock of the interbedded roadway,with a deformation amount of 5.34 mm in the roadway surrounding rock after 6 months,confirming the effectiveness and reliability of the support scheme.