The invention discloses a steel wire type elastic hinge mechanism, which comprises an upper hinge, an upper door shaft sleeve, a lower hinge, a lower door shaft sleeve, an upper limiting block, a steel wire torsion spring and a lower limiting block, wherein an upper door shaft of the upper hinge is rotationally arranged on the upper door shaft sleeve; a lower door shaft of the lower hinge is rotationally arranged on the lower door shaft sleeve; both the upper limiting block and the lower limiting block are fixedly connected with a door shell; the upper limiting block is fixedly connected with the upper door shaft sleeve; the lower part of the upper limiting block is provided with an upper steel wire bend slot; the lower limiting block is fixedly connected with the lower door shaft sleeve; the upper part of the lower door shaft is provided with a lower steel wire bend slot; an upper bend of the steel wire torsion spring is inserted into the upper steel wire bend slot; and a lower bend of the steel wire torsion spring is inserted into the lower steel wire bend slot. The steel wire type elastic hinge mechanism has the advantages of fewer parts, more simplified structure, more convenient assembling and very low cost.