A robot includes a base, a movable platform, a shaft rotatably connecting the movable platform and the base, three kinematic chains rotatably connecting the movable platform and the base, an end effector defining an air orifice, and a rotary member. The rotary member is rotatably connected to the movable platform, and two opposite ends of the rotary member are connected to the shaft and the end effector, respectively. The movable platform defines an air hole, and the rotary member defines an airflow passage communicating between the air hole and the air orifice.