The invention discloses an anti-seepage structure for a faced rockfill dam face. A faced rockfill dam is provided with a dam body and a toe slab, and the anti-seepage structure is laid on the upstream side of the dam body and comprises a TPO (thermoplastic polyolefin) anti-seepage layer and an anchoring layer, wherein the TPO anti-seepage layer is fixed on the dam body through the anchoring layer. The anti-seepage structure has the advantages that the TPO anti-seepage layer is arranged on the upstream side of the dam body of the faced rockfill dam and replaces a concrete face slab to achieve the anti-seepage performance of the faced rockfill dam, the anchoring layer is used for fixing the TPO anti-seepage layer on the dam body, the waterproof performance of the TPO anti-seepage layer is far superior to that of the concrete face slab, and accordingly simplicity in construction and low manufacturing cost are achieved; the TPO anti-seepage layer which is flexible internally can adapt to dam body settlement deformation, so that various environment change requirements can be met, and dam construction material limitations are reduced; a construction period can be shortened substantially, and construction is accelerated; simplicity and convenience in repair are achieved in case of any problem.