Abstract: The experiences of cement-rubble masonry reinforcement seem to be pretty lack at present. This paper based on the dam safety appraisal report for Changsha dam，using original design data, has compared a variety of reinforcement schemes on dam, stilling basin, scour outlet and discharge sluice, dangerous rock body, flood-control road, one scheme is selected and reinforcement has been carried out according to the scheme. This article mainly introduces the reinforcement of primary structures.