Abstract: It was found that large，continuous and uncontrollable deformation was the deformation and damage characteristics of surrounding rock of deep roadway.Long anchored bolt supporting technology was put forward for deep roadway.Applying numerical simulation to analyzing plastic zone distribution with different supporting systems，results showed that plastic zone range was large under deep condition，improving supporting density only changing less plastic zone range and common anchored bolt and cable supporting was not adaptable.Surrounding rock control mechanism of long anchored bolt was deeply researched and its advantage for deep large-deformation roadway was expounded.Field test showed that surrounding rock effect was excellent after applying long anchored bolt，and long anchored bolts at two-sides could be reused when expanding rib and supporting effect was good.