Abstract: In deep high geo-stress environment,coal and rock creep make roadway deformation larger and roadway will influenced by long-time creep.Large deformation of deep roadway is composed of two parts:one is the deformation occur at excavation moment and the other is later creep deformation.Deep high geo-stress is the main cause of large deformation,so deep anchored bolt supporting design and construction must take the 2 kinds of deformation into account to effectively control large deformation of deep roadway.Numerical simulation was applied to analyzing supporting stress filed variation at roadway excavation phrase and later phrase.Results showed that supporting stress filed strengthened at the first phrase of creep and continuously weakened at 2nd and 3rd phrase of creep.It obtained that supporting stress field weakening was a key factor that large deformation could not be controlled in deep roadway.