A recyclable cable tie has a single-aperture buckle, at least one multi-aperture buckle and a belt. The top of the single-aperture buckle is connected to the bottom of the most proximal multi-aperture buckle via the connecting tape. Each one of the at least one multi-aperture buckle has at least two up-down symmetrically arranged engaging cases. Each engaging case has an engaging pawl and an opening. Multiple unidirectional ratchets are formed on the top of the engaging pawl and extend up into the opening of the multi-aperture buckle. The belt is connected to the bottom of the single-aperture buckle. The belt may first engage with the single-aperture buckle, and the extra tail of the belt may be cut off. The extra tail that is cut off may be further used to engage with the multi-aperture buckles continuously so as to be recyclable.