Flame-retardant hose

The utility model discloses a flame-retardant hose, and relates to the technical field of hoses. The flexible pipe comprises a flexible pipe body, a supporting layer is installed on the periphery of the flexible pipe body, a heat insulation layer is installed on the periphery of the supporting layer, a flame-retardant layer is fixedly connected to the periphery of the heat insulation layer, the heat insulation layer is arranged to be a graphene aerogel layer, and the flame-retardant layer is arranged to be a glass fiber fabric layer. Through cooperative use of the heat insulation layer and the flame-retardant layer, when high temperature is generated outside the hose body, the high temperature is prevented from being embedded into the heat insulation layer through the rated high porosity of graphene aerogel, and meanwhile the situation of spontaneous combustion on the surface of the flame-retardant layer is reduced through the high-temperature-resistant characteristic of the glass fiber layer; therefore, the