The present invention provides an apparatus and a method for fabricating a glass rod from a glass preform capable of suppressing a diameter fluctuation of the drawn glass rod even when there is a relatively large diameter reduction ratio between the glass preform and the glass rod, such as 60 to 95%. A wire harness is inserted to the main body portion and an inner portion of the tube in an unbundled state, under the state, at least two stages of narrowed portions constituted by narrowing an inner diameter of the tube at a position proximate to a front end of the tube and a position proximate to the main body portion remote from the position. Further, the mica particles reflect visible wavelengths of light.