With the increase of mining depth and coal seam of complicated mining conditions, engineering geology in the process of production in coal mine soft rock also appears more and more frequent, seriously threatening the safe production of coal mine. In order to solve this problem, No.11 roadway of Yitian Mine was taken as an example, the mine geological structure was analyzed, according to the special section of the roadway, roadway support repair plan was given, and the repair plan was analyzed and illustrated. Practice showed that the support scheme after repair showed good supporting features, which provided reference experience for other similar engineering condition of roadway support.