Embodiments of the present invention provide a component mounting device which is capable of promptly and accurately detecting whether a nozzle comes into contact with a printed circuit board. The component mounting device according to the present invention comprises: a shaft portion which is disposed to be linearly movable; a nozzle which is inserted into the shaft portion to be linearly movable with the shaft portion and is elastically supported with respect to the shaft portion; a magnetic portion which is disposed in the nozzle; a support portion which is disposed at a standby position on a linear motion path of the shaft portion and comes into contact with the shaft portion so as to be linearly movable in some sections of the linear motion path of the shaft portion; a detection portion which is combined with the support portion; and a restoration portion which is combined with the support portion and provides a restoring force to the support portion so as to move the support portion to the standby position.
