Self compacting concrete gravity dams are constructed by fully filling the space between rockfills with high fluidity concrete and pouring the concrete in layers. In order to study the stability between the pouring layers, the rigid body balance principle and the third strength theory were used to analyze the anti sliding stability and rockfill tension between the self compacting concrete gravity dam layers.The results show that as the contact area α increases, the inter layer anti sliding stability coefficient K increases gradually, but the increment is within a stable range. Furthermore, the tensile force between the rockfill piles increases gradually with the increase of the exceeding height β, when β=15%, it can be used as an upper limit for the design of self compacting concrete gravity dam. Under earthquake conditions, the earthquake had a great influence on the anti sliding stability coefficient K of the dam and the tensile force between the piles, the anti sliding stability coefficient K reduced by more than 15%, and the tensile force between the piles increased by about 2 MPa.