Inward and outward folding flexible screen mobile terminal and hinge

The invention provides an inward and outward folding flexible screen mobile terminal hinge and a hinge thereof.An axial driving mechanism responding to rotation of a rotary connecting arm is arranged, a three-axis synchronous reverse rotation connecting mechanism is adopted as a synchronous reverse rotation connecting mechanism, and the axial driving mechanism is combined with the three-axis synchronous reverse rotation connecting mechanism; the three-axis synchronous reverse rotation connecting mechanism is provided with a middle shaft, the middle shaft is arranged to be a rotating shaft rotating synchronously with the rotating connecting arm, and the middle shaft serves as a driving shaft of the axial driving mechanism. According to the embodiment of the invention, the avoidance for meeting the requirement that the middle part of the flexible screen is bent into a water drop shape can be provided, so that when the internally and externally folded flexible screen mobile terminal is folded inwards, the previo