A detachable lacing apparatus using a shoelace loop for footwear, the apparatus comprising: a shoelace having end parts configured to be connected to each other after being passed through a plurality of shoelace holes or shoe eyelets formed on a shoe; and a shoelace length adjuster in which the shoelace is wound and connected, and configured to tighten the shoelace by rotation, wherein the shoelace length adjuster is fixed by shoelace loops configured to be passed through the shoelace holes or the shoe eyelets and comprises a detachable housing having therein a cylindrical-shaped accommodation part, of which an upper portion is open, and a length adjuster detachable part formed by protruding from one side of the detachable housing and to which the shoelace is fixed, characterized in that the length adjuster detachable part has two locking groove parts (311, 312) facing each other on an upper side of the length adjuster detachable part so as to allow two shoelace loops configured to be passed through adjacent two shoelace holes to be oppositely fastened thereto, and the detachable housing has on a lower side a shoelace loop bifurcation part, wherein of said shoelace loops, fixed by fitting into said two opposing locking groove parts (311, 312), configured to pass in two lines from the upper side to the lower side of the shoe upper through the adjacent two shoelace holes or shoe eyelets and branches into a first line and a second line, respectively, so that the two first lines are interconnected at a shoelace loop connecting groove and the two second lines are separated and connected to a winding drum, and the detachable housing includes a shoelace passing hole formed in the central portion adjacent to the shoelace loop bifurcation part and through which two second lines branched from the shoelace loop bifurcation part pass and are connected to the winding drum 34. a shoelace having end parts configured to be connected to each other after being passed through a plurality of shoelace holes or shoe eyelets formed on a shoe; and a shoelace length adjuster in which the shoelace is wound and connected, and configured to tighten the shoelace by rotation, wherein the shoelace length adjuster is fixed by shoelace loops configured to be passed through the shoelace holes or the shoe eyelets and comprises a detachable housing having therein a cylindrical-shaped accommodation part, of which an upper portion is open, and a length adjuster detachable part formed by protruding from one side of the detachable housing and to which the shoelace is fixed, characterized in that the length adjuster detachable part has two locking groove parts (311, 312) facing each other on an upper side of the length adjuster detachable part so as to allow two shoelace loops configured to be passed through adjacent two shoelace holes to be oppositely fastened thereto, and the detachable housing has on a lower side a shoelace loop bifurcation part, wherein of said shoelace loops, fixed by fitting into said two opposing locking groove parts (311, 312), configured to pass in two lines from the upper side to the lower side of the shoe upper through the adjacent two shoelace holes or shoe eyelets and branches into a first line and a second line, respectively, so that the two first lines are interconnected at a shoelace loop connecting groove and the two second lines are separated and connected to a winding drum, and the detachable housing includes a shoelace passing hole formed in the central portion adjacent to the shoelace loop bifurcation part and through which two second lines branched from the shoelace loop bifurcation part pass and are connected to the winding drum 34.