Abstract: In view of the outstanding problems in super high concrete face rockfill dams, such as large deformation of concrete face plate, easy opening of concrete face joint and non-maintenance of bottom face plate, etc., a new type of dam body structure suitable for ultra-high concrete face rockfill dams is presented in this paper: a compound structure of concrete gravity dam-face rockfill dam. We have analyzed the shape parameters such as height, upstream and downstream slope ratio and the toe plate arrangement influence on the structural stress and deformation of the new type compound concrete gravity dam and the deflection of the face plate, during the construction period, the storage operation period and the storage period when earthquakes occur, providing a reference for the selection of new structural type. By comparing the calculated results of the optimized new type compound structure with that of the conventional rockfill dam, it is obtained that except for the compound structure with the opening displacement of the peripheral joints and the stress of the concrete face slab higher than that of the conventional concrete face dam in the construction period, the other indexes are that the compound structure is dominant, and the opening displacement of the peripheral joint is within the allowable deformation range of the corresponding code and the water-sealing structure, and has a higher safety margin. The new structure can shorten the length of the concrete face, improve the stress state of the face, reduce the flexure deformation of the face, and effectively improve the maintainability of the heel and toe slab of the concrete face rockfill dam, and has a wide application prospect.