The invention belongs to the technical field of building materials, and discloses an ultra-high-performance concrete combined permanent template and application thereof. The outer side of a permanenttemplate is flat or curved surface, and the inner side is ribbed; the four side portions are thickened, and a tongue-and-groove is formed, and a lap joint of the tongue-and-groove is hydrophobic; andafter the tongue-and-groove is lap jointed, a caulking groove smaller on the outside and bigger on the inside is formed in the outer side of a template. According to the high-performance-concrete combined permanent template, a tongue-and-groove design is used on all four sides, on the one hand, the penetration length of an external substance is greatly increased; on the other hand, a lap joint surface of the tongue-and-groove is hydrophobic, infiltration of the external substance can be effectively prevented by coating a hydrophobic paste before installation, and durability can be effectivelyimproved; ultra-high-performance concrete is used as a caulking agent, the caulking groove and a bolt hole are both smaller on the outside and larger on the inside, release of an ultra-high performance concrete caulking agent can be effectively prevented, and structural durability is improved.