The utility model provides a curtain with a safety device. The upper end of a netted net curtain is provided with an opening/closing device pivoted with a plurality of skeletons which can unfold or fold a curtain body. The utility model is characterized in that the top of the central column of the opening/closing device is provided with a through hole; a casing tube of the opening/closing device is locked with a safety buckle via a lock sleeve. The safety buckle can be buckled in the through hole of the central column to form the safety device which can prevent the central column rolling off the casing tube to cause the curtain body to be suddenly folded up. One end of the safety buckle is an annular ring sheathed on the casing tube of the closing device, and the other end is a hooked hook body which can be hooked in the through hole of the central column to form a safety measure.