A shaft coupling mechanism 1 includes a coupling base body 3 coupled to a rotating shaft 2; a coupling base body 5 coupled to a rotating shaft 4; a pair of rotation transmitting members 6 and 7 interposed between both coupling base bodies 3 and 5 and adapted to transmit the rotation of the rotating shaft 2 in an R direction to the rotating shaft 4 through both coupling base bodies 3 and 5; an intermediate interposed member 8 interposed between the pair of rotation transmitting members 6 and 7; and a coupling means 9 for coupling the pair of rotation transmitting members 6 and 7 to each other.