Flexible mineral insulated fireproof cable

The utility model relates to a flexible mineral insulated fireproof cable, which comprises a core layer group, a clamping sleeve, a filling layer, an isolating layer and an outer protective sleeve, wherein the core layer group consists of a plurality of lead bodies; the clamping sleeve, the filling layer, the isolating layer and the outer protective sleeve are arranged on the periphery of the core layer group; wherein the clamping sleeves are arranged at equal intervals or unequal intervals along the length direction of the core layer group; the filling layer is arranged between the isolating layer and the core layer group; the outer protective sleeve is arranged on the outer side of the isolating layer; the isolation layer comprises a first isolation layer and a second isolation layer, the first isolation layer is located on the inner side, and a plurality of strip-shaped grooves are formed in one side, in contact with the filling layer, of the first isolation layer; a plurality of sunken grooves are formed