The invention provides a flexible mineral insulation fireproof cable and relates to the technical field of power cables. The cable comprises a cylindrical conductor core, an insulation layer, a wrapping band, an oxygen-isolating flame-retardant layer and an outer sheath, wherein the conductor core is sleeved with the insulation layer, the wrapping band, the oxygen-isolating flame-retardant layer and the outer sheath in sequence, the insulation layer wraps the conductor core to form a columnar cable core, and the wrapping band is in a ring shape and fixes the conductor core and the insulation layer. According to the cable, the insulation layer wraps the conductor core, the oxygen-isolating flame-retardant layer is arranged, a hard armor can be formed quickly when the cable is in fire or at high temperature, therefore, good flame retarding and fire insulating effects are achieved, and the cable is convenient to use continuously in a fire.