The invention relates to a thermoplastic halogen-free low-smoke flame-retardant ceramic polyolefin oxygen barrier material which is prepared from the following raw materials in parts by weight: 5-100parts of a polyolefin copolymer, 50-100 parts of a flame retardant, 100-150 parts of ceramic powder, 20-40 parts of a fluxing agent, 5-10 parts of a coupling agent, 10-30 parts of a compatilizer, 2-5parts of a lubricant and 1.5-4 parts of an antioxidant. The thermoplastic halogen-free low-smoke flame-retardant ceramic polyolefin oxygen barrier material is simple in process flow and easy to operate and can be produced according to the process and the processing temperature of a halogen-free low-smoke polyolefin cable material. A product can be used for high, medium and low voltage fire-resistant electric wires and cables, flexible fireproof cables, fireproof power and control cables, mine cables, marine cables, oil field and offshore platform fireproof cables, fireproof coaxial cables, fireproof optical fibers and cables and flexible fireproof and fire-resistant cables, and can be used for replacing a mica belt, ceramic fire-resistant silicone rubber and a ceramic fire-resistant composite belt in an aluminum alloy sheath fireproof and fire-resistant cable, is rapidly sintered into ceramic at the temperature higher than 600 DEG C so as to form a good shell, has excellent heat insulation and fire insulation effects, has a structural flame retardancy effect and is used for improving the cable flame retardancy.