8-17 DNAzyme is a well-known versatile nucleic acid tool for achieving a specific cleavage function, and thus, investigation of 8-17 DNAzyme functions can prove to be of great significance. The conventional epigenetic modification on DNAzyme may pave a new way for the study of catalytic properties. Herein, the most abundant and best characterized modifications 5-methylcytosine (5mC) and