Abstract: In order to cope with the difficult support of soft rock roadway with high stress in Juji Mine, the support technique by pressure relief was proposed based on stress distribution characteristic in surrounding rock after the roadway's excavation. The principal of stress relief and the main composition were briefly introduced. Combined with the field practical engineering, the main construction process was summarized and the technique system of support by pressure relief in Juji mine was proposed. Then the construction process and its parameters were introduced in detail on site. The effect of field application was good, at last the surface displacement of roadway's surrounding rock was monitoring and comparatively analyzed which show that the technique strengthened the support structure, maintained the stability of roadway.