Disclosed is a fixing device for laces used in footwear, clothes, bags, and so on, and that can be configured in an extremely simple manner while maintaining the lace at a tightly fixed state when in use, without having any slip, thereby ensuring convenience of use. The present invention provides a fixing device for a lace that includes fixing plates that are extended from both sides of a curved plate thereof, so as to be applied to clothes, bags, etc., and means that is formed on elastic fixing projection pieces and a protruded part corresponding to the elastic fixing projection pieces, for preventing the lace from being moved to or deviated from one side of the elastic fixing projection pieces.