A foldable electronic device comprising: a foldable enclosure comprising multiple sub-enclosures (301a, 301b) and being able to be folded or unfolded; and a hinge configured to rotatably connect the multiple sub-enclosures (301a, 301b) to each other around at least one rotation axis, wherein the hinge comprises: multiple hinge leaves respectively coupled to ends of the multiple sub-enclosures (301a, 301b) and configured to rotate during folding and unfolding operations of the foldable enclosure; a rotation guide which is formed on each of the hinge leaves and comprises a rotation surface having a curved-surface of a shape corresponding to a rotation trajectory of the hinge leaves; a force transmission member having a pressing surface configured to press against the rotation surface of the rotation guide; a force diverting part configured to convert a force having a directional component parallel to the pressing surface to a force having a directional component perpendicular to the pressing surface, to change the direction in which the force is applied, thereby pressing the force transmission member against the curved-surface of the rotation guide; and a hinge actuator configured to apply a force to the force diverting part in a direction having a directional component parallel to the pressing surface. a foldable enclosure comprising multiple sub-enclosures (301a, 301b) and being able to be folded or unfolded; and a hinge configured to rotatably connect the multiple sub-enclosures (301a, 301b) to each other around at least one rotation axis, wherein the hinge comprises: multiple hinge leaves respectively coupled to ends of the multiple sub-enclosures (301a, 301b) and configured to rotate during folding and unfolding operations of the foldable enclosure; a rotation guide which is formed on each of the hinge leaves and comprises a rotation surface having a curved-surface of a shape corresponding to a rotation trajectory of the hinge leaves; a force transmission member having a pressing surface configured to press against the rotation surface of the rotation guide; a force diverting part configured to convert a force having a directional component parallel to the pressing surface to a force having a directional component perpendicular to the pressing surface, to change the direction in which the force is applied, thereby pressing the force transmission member against the curved-surface of the rotation guide; and a hinge actuator configured to apply a force to the force diverting part in a direction having a directional component parallel to the pressing surface. multiple hinge leaves respectively coupled to ends of the multiple sub-enclosures (301a, 301b) and configured to rotate during folding and unfolding operations of the foldable enclosure; a rotation guide which is formed on each of the hinge leaves and comprises a rotation surface having a curved-surface of a shape corresponding to a rotation trajectory of the hinge leaves; a force transmission member having a pressing surface configured to press against the rotation surface of the rotation guide; a force diverting part configured to convert a force having a directional component parallel to the pressing surface to a force having a directional component perpendicular to the pressing surface, to change the direction in which the force is applied, thereby pressing the force transmission member against the curved-surface of the rotation guide; and a hinge actuator configured to apply a force to the force diverting part in a direction having a directional component parallel to the pressing surface.