Flame-retardant cable

The invention relates to a flame-retardant cable which comprises a cable core. An oxygen isolation layer and an insulation layer are arranged outside the cable core in a sleeved manner, the insulationlayer is made of a polyvinyl chloride insulation material, the oxygen isolation layer is made of a ceramic silicone rubber material, a flame-retardant filling layer is arranged outside the insulationlayer in a sleeved manner, a protection layer is arranged on the outermost layer of the insulation layer in a sleeved manner and made of polyvinyl chloride, and the flame-retardant filling layer is made of glass fiber filler. The flame-retardant cable has the advantages that after adopting the above structure, oxygen is isolated through the oxygen isolation layer to cut off burning conditions, sothat flame retarding is realized from the source; flame retarding is further realized through the flame-retardant filling layer; polyvinyl chloride is utilized to protect the cable, so that flame retarding is realized while we