A robot device, comprising: a first link configured to rotate on a first axis; a second link supported by a tip-end part of the first link and configured to be rotatable on a second axis; and a hand part supported by a tip-end part of the second link, wherein a line space, where a supply line configured to supply electricity and/or material is disposed, is provided to the first link and the second link, and wherein the line space includes: a first insertion hole formed in a central part of the first link and opening in the tip-end part of the first link; a second insertion hole formed in a central part of the second link and opening in a base-end part of the second link; and a gap space formed between a tip-end opening of the first insertion hole and a base-end opening of the second insertion hole, characterized in that: when one direction perpendicular to the first axis is a first perpendicular direction, and a direction perpendicular to both the first axis and the first perpendicular direction is a second perpendicular direction, the second axis extends in parallel to the first perpendicular direction and is deviated from the first axis in the second perpendicular direction; and in a reference posture of the second link, the second link extends in parallel to the first axis, and the center of the base-end opening of the second insertion hole is deviated in the second perpendicular direction from the center of the tip-end opening of the first insertion hole. a first link configured to rotate on a first axis; a second link supported by a tip-end part of the first link and configured to be rotatable on a second axis; and a hand part supported by a tip-end part of the second link, wherein a line space, where a supply line configured to supply electricity and/or material is disposed, is provided to the first link and the second link, and wherein the line space includes: a first insertion hole formed in a central part of the first link and opening in the tip-end part of the first link; a second insertion hole formed in a central part of the second link and opening in a base-end part of the second link; and a gap space formed between a tip-end opening of the first insertion hole and a base-end opening of the second insertion hole, a first insertion hole formed in a central part of the first link and opening in the tip-end part of the first link; a second insertion hole formed in a central part of the second link and opening in a base-end part of the second link; and a gap space formed between a tip-end opening of the first insertion hole and a base-end opening of the second insertion hole, characterized in that: when one direction perpendicular to the first axis is a first perpendicular direction, and a direction perpendicular to both the first axis and the first perpendicular direction is a second perpendicular direction, the second axis extends in parallel to the first perpendicular direction and is deviated from the first axis in the second perpendicular direction; and in a reference posture of the second link, the second link extends in parallel to the first axis, and the center of the base-end opening of the second insertion hole is deviated in the second perpendicular direction from the center of the tip-end opening of the first insertion hole. when one direction perpendicular to the first axis is a first perpendicular direction, and a direction perpendicular to both the first axis and the first perpendicular direction is a second perpendicular direction, the second axis extends in parallel to the first perpendicular direction and is deviated from the first axis in the second perpendicular direction; and in a reference posture of the second link, the second link extends in parallel to the first axis, and the center of the base-end opening of the second insertion hole is deviated in the second perpendicular direction from the center of the tip-end opening of the first insertion hole.