Disclosed is a voice coil mounting structure, which includes a reel, which has a first end mounted with a coil and a second end provided with equiangularly spaced female retaining portions, and a reel holder, which defines an annular space for accommodating the second end of the reel and has female retaining portions provided inside the annular space for engagement with the female retaining portions to lock the reel to the reel holder upon a rotary motion of the reel relative to the reel holder after insertion of the second end of the reel into the annular space.