Abstract: Low elastic modulus concrete anti-seepage wall was applied in resk removal and consolidation design of Qingshan reservoir, Tongjiqiao reservoir and Laohutan reservoir projects, etc.. Based on them, the paper was put forward major performance indexes of the wall material, major ideas and the related matters which should be considered in designing of proportion ratio. Therefore, significant experiences were obtained to use low elastic modulus concrete anti-seepage wall technology for risk removal and consolidation of similar high core wall earth-rock dam and low and medium slab rockfill dam.