A fiber structure used for a wearable soft exoskeleton suit includes: a first and a second current-magnetic metal fiber layers arranged to face each other and configured to apply attraction to each other by application of electric current； and a variable rigidity fiber layer interposed between the first and second current-magnetic metal fiber layers and configured to be pressurized by movements of the first and second current-magnetic metal fiber layers when the first and second current-magnetic metal fiber layers come close to one another by attraction force caused by the application of electrical current thereto, so as to increase a rigidity thereof.
