A smart zipper includes: a fastener stringer including two rows of zipper teeth and a joint at one end of the two rows of zipper teeth for fixedly connecting the one end of the two rows of zipper teeth; a slider, including two lateral limiting portions, the two lateral limiting portions having conductive properties, and the two lateral limiting portions respectively electrically contacting outer edges of the two rows of zipper teeth; and a resistance measuring chip electrically connected to the two lateral limiting portions of the slider respectively, wherein the resistance measuring chip, the slider and the fastener stringer form a conductive loop. The resistance measuring chip is used for measuring the resistance value of the conductive loop, and outputting a measurement signal. The smart zipper provided by the present disclosure can detect its own closed state. Therefore, the user can know the closed state of the zipper in real time to avoid embarrassment or property loss due to unclosed zipper.