Abstract: In order to obtain the deformation law of surrounding rock of different roadway widths, this article analyzed deformation characteristics of surrounding rock by using numerical simulation when the roadway width was 3 to 8 m. The displacement of surrounding rock increases with increasing width of the roadway, the displacement increases obviously when roadway widths is greater than a certain critical width, the surrounding rock moves integrally and occurs separation. The middle roof and upper roadside of extra-wide roadway is the key part of surrounding rock control. High prestressed bolt anchor support technology is used for specific geological conditions and deformation characteristics of surrounding rock of different roadway width. Field monitoring results show that the deformation of surrounding rock has been effectively controlled.