Lens module and manufacturing method thereof

The invention provides a lens module group which includes a drawtube and lens seat. The lens module group also includes a glass which is integrated with the drawtube and the lens seat and arranged in the drawtube. The drawtube, the lens seat and the glass in the lens module group are an integral structure, thus being capable of saving manufacture cost greatly during the preparing process of the lens module group. Furthermore, as the drawtube, the lens seat and the glass in the lens module group are an integral structure, the assembly among the drawtube, the lens seat and the glass are reduced, thus being capable of greatly reducing various problems caused by assembly. Besides, the invention also provides a manufacturing method of the lens module group and a camera module group which uses the lens module group.