A rope buckle includes a first clamping plate and a second clamping plate, substantially parallel to each other, a through hole and a pivot seat disposed on both ends of the first clamping plate respectively, a position limit module disposed adjacent to the through hole, a positioning rod pivotally installed to an end of the second clamping plate and passed through the through hole of the first clamping plate, and whose end being secured by a fixing nut, and a press module having a press rod provided for passing a first pivot to pivotally install a pivot seat of the first clamping plate, and an end of the press rod is extended to a position positioned by the position limit module, and another end of the press rod is pulled at the second clamping plate for clamping and fixing the second clamping plate and the first clamping plate.