A selective compliance assembly robot arm (SCARA) robot, comprising: an arm that extends in a horizontal direction and is capable of rotating perpendicularly axially around a rotation central part located in one end part in a longitudinal direction of the arm; an operating spindle assembly that is provided detachably to the other end part in the longitudinal direction of the arm; and an external striate member (34a, 34b, 35a, 35b) connected to the operating spindle assembly, wherein the operating spindle assembly includes a hollow operating spindle that moves in a vertical direction with respect to the arm, and an internal striate member (34, 35) which is disposed inside the operating spindle and retained in the operating spindle and to which the external striate member is detachably connected, wherein the operating spindle assembly further has a connecting member (32, 33) attached to an end part of the operating spindle for relaying the internal striate member and the external striate member, and wherein the internal striate member includes an internal wire formed of an electric wire, and the external striate member includes an external wire (34a, 34b) formed of an electric wire and connected detachably to the internal wire, characterized in that the connecting member (32, 33) includes a bush flange (32a, 33a) provided at an upper end or a lower end of the operating spindle and a wire connector (32b, 33b) which has an external connector section projecting to the outside of the operating spindle and an internal connector section positioned on the inside of the operating spindle, the connecting member being connected to the operating spindle by being screwed or press-fitted, the wire connector being retained in a vertical communicating hole of the bush flange, one of the external connector section and the internal connector section extending above the bush flange and the other one of the external connector section and the internal connector section extending below the bush flange, the external connector section being connected to the external wire and the internal connector section being connected to the internal wire. an arm that extends in a horizontal direction and is capable of rotating perpendicularly axially around a rotation central part located in one end part in a longitudinal direction of the arm; an operating spindle assembly that is provided detachably to the other end part in the longitudinal direction of the arm; and an external striate member (34a, 34b, 35a, 35b) connected to the operating spindle assembly, wherein the operating spindle assembly includes a hollow operating spindle that moves in a vertical direction with respect to the arm, and an internal striate member (34, 35) which is disposed inside the operating spindle and retained in the operating spindle and to which the external striate member is detachably connected, wherein the operating spindle assembly further has a connecting member (32, 33) attached to an end part of the operating spindle for relaying the internal striate member and the external striate member, and wherein the internal striate member includes an internal wire formed of an electric wire, and the external striate member includes an external wire (34a, 34b) formed of an electric wire and connected detachably to the internal wire, characterized in that the connecting member (32, 33) includes a bush flange (32a, 33a) provided at an upper end or a lower end of the operating spindle and a wire connector (32b, 33b) which has an external connector section projecting to the outside of the operating spindle and an internal connector section positioned on the inside of the operating spindle, the connecting member being connected to the operating spindle by being screwed or press-fitted, the wire connector being retained in a vertical communicating hole of the bush flange, one of the external connector section and the internal connector section extending above the bush flange and the other one of the external connector section and the internal connector section extending below the bush flange, the external connector section being connected to the external wire and the internal connector section being connected to the internal wire.