Abstract: The refracturing reorientation is fairly difficult and most important in refracturing. The refracture orientation depends on the stress field in the vertically-fractured well. The stress field, especially the horizontal principal stress orientation in the vertically-fractured well determines the azimuth of refracture creation and refracture propagation. The paper study systematically the stress characteristics of vertically-fractured gas well and the main factors affecting the change of stress value and the stress orientation. Using the theory of elasticity mechanics and fluid-solid coupling and poroelastic, we have set up the mathematical model of induced stress of refracturing gas well to quantitatively analyze and simulate stress filed before refracturing for vertically-fractured gas well.