A robot includes a base, a robot arm having a first arm provided on the base and configured to rotate about a first rotation axis and a second arm provided on the first arm and configured to rotate about a second rotation axis, a cable placed inside of the robot arm, and a tube having a suction hole for suctioning a gas inside of the robot arm when connected to a pump, wherein a first gap is provided between the first arm and the second arm, and the suction hole is placed inside of the robot arm.