A dual-arm robot, comprising: a first axis, and a first arm and a second arm, each having a first link rotatable about the first axis, and a second link rotatably coupled to the first link and defined with an end effector attaching portion, wherein, the first link of the first arm is disposed to be separated from the first link of the second arm in an extending direction of the first axis, and the second link of the first arm and the second link of the second arm are disposed so as to be located between the first link of the first arm and the first link of the second arm in the extending direction of the first axis and so that the end effector attaching portions are located at substantially the same position in the extending direction of the first axis, the second link of the first arm is supported by a second shaft protruding in parallel with the first axis from the first link of the first arm toward the first link of the second arm, the second shaft member of the first arm includes a first portion and a second portion coupled to each other in series, the first portion is disposed inside the first link of the first arm, and the second portion is disposed outside the first link of the first arm and is coupled to the second link of the first arm, the second link of the second arm is supported by a second shaft protruding in parallel with the first axis from the first link of the second arm toward the first link of the first arm, and the second shaft member of the second arm includes a first portion and a second portion coupled to each other in series, the first portion is disposed inside the first link of the second arm, and the second portion is disposed outside the first link of the second arm and is coupled to the second link of the second arm. a first axis, and a first arm and a second arm, each having a first link rotatable about the first axis, and a second link rotatably coupled to the first link and defined with an end effector attaching portion, wherein, the first link of the first arm is disposed to be separated from the first link of the second arm in an extending direction of the first axis, and the second link of the first arm and the second link of the second arm are disposed so as to be located between the first link of the first arm and the first link of the second arm in the extending direction of the first axis and so that the end effector attaching portions are located at substantially the same position in the extending direction of the first axis, the second link of the first arm is supported by a second shaft protruding in parallel with the first axis from the first link of the first arm toward the first link of the second arm, the second shaft member of the first arm includes a first portion and a second portion coupled to each other in series, the first portion is disposed inside the first link of the first arm, and the second portion is disposed outside the first link of the first arm and is coupled to the second link of the first arm, the second link of the second arm is supported by a second shaft protruding in parallel with the first axis from the first link of the second arm toward the first link of the first arm, and the second shaft member of the second arm includes a first portion and a second portion coupled to each other in series, the first portion is disposed inside the first link of the second arm, and the second portion is disposed outside the first link of the second arm and is coupled to the second link of the second arm.