To provide a component transport device 50 without a bolt B threaded by a screw shaft 31 and a first wall 11 and without the bolt B falling from the screw shaft 31.

A component transport device includes: a screw 30, a first plug screw 10; and a second plug screw 20. The screw 30 and the first plug screw 10 are inclined in a direction in which a component mounted on a screw blade 32 abuts on a screw shaft 31 and a first wall 11 by empty weight. The screw 30 and the first plug screw 10 rotate oppositely to each other in a direction in which a bolt B mounted on the screw blade 32 is forced out from between the screw shaft 31 and the first wall 11. The screw 30 and the second plug screw 20 rotate oppositely to each other in a direction in which the bolt B mounted on the screw blade 32 is entangled between the screw shaft 31 and a second wall 21.