The stability of roadway intersection has been studied under the condition of depth excavation,soft rock masses by using orthogonal experiment of numerical simulation.The results show that the rib stability of triangular space at intersection is remarkably affected by the orientation angle αof maximum horizontal stress and fork angleβ.The roof stability at intersection is highly obviously affected by roof span.The relationship between each influence parameter and stability indices has been found,the surrounding rock deformation mechanics mechanism of soft rock roadway intersection has been analyzed.The results provide a guideline for soft rock mass intersection construction and deformation prediction in great depths.