The utility model has a removable connection structure between a lens cone and a holder, wherein a salient hook with right angle type is vertically arranged on one of the touching installation surfaces of the holder and the lens cone, a snap of the bayonet connection corresponding to the salient hook with right angle type is positioned on the other installation surface, and a magnet is provided in the inner wall of one or both installation surfaces. The salient hook is engaged with the snap, achieving the removable connection between the lens cone and the holder, and the installation of magnet could guarantee the contact face closed formed by the lens cone and the holder. With the simple conformation of the utility model, the connecting and discharging between the lens cone and the holder will become highly convenient.