Based on the properties of high membrane faced rock-fill dams(MFRD), deformation principles of the seepage-proofing face membrane and the deformation characteristics of the main materials are analyzed. The design and selection of face membranes and their spread out and periphery anchorage are expounded. The safety check method of the anti-seepage membrane deformation is analyzed and a systematic safety check method for face membrane deformation is proposed. After pointing out the defects about safety check method for liquid expansion of face membranes on gravel cushion in early research, a more feasible safety check method in engineering design and application is proposed.