Abstract: A suitcase lock includes a primary unit fitted on a suitcase, a wire housing fitted on a suitcase, a reel and elastic element combination arranged in the housing, and a wire; the wire is connected with the reel at an inner end, and a locking tab at an outer end, which is pass through the housing; the primary unit has several lock holes, and can secure a pair of zipper slides of the suitcase after the slides are inserted in the lock holes; the locking tab is shaped in such a way that it can be secured in position by the primary unit when it is inserted in one of the lock holes; the reel is biased towards a storing position by the elastic element, in which storing position the wire is substantially completely wound around the reel.