Halogen-free low-smoke power cable with oxygen barrier layer being flame-retardant

The invention relates to a halogen-free low-smoke power cable with an oxygen barrier layer being flame-retardant, which comprises an outer sheath, wherein an oxygen barrier layer and a plurality of insulating sleeves are sequentially arranged in the outer sheath, filling ropes are arranged between the oxygen barrier layer and the insulating sleeves, conductors are arranged in the insulating sleeves, the oxygen barrier layer is mainly composed of a wrapping tape which contains Al(OH)3 and Mg(OH)2 and is processed through a special technology, when the wrapping tape is heated, crystal water is released, an infusible and noncombustible hard shell is formed, the cooling and isolation effects are achieved, and due to the fact that a large quantity of hydrated metal oxide aluminum hydroxide, magnesium hydroxide and other inorganic materials are added into the halogen-free low-smoke polyolefin flame-retardant sheath, the extrusion process performance becomes poor, the processing temperature is controlled between 160