Nanozymes have become a research hotspot in related fields in recent years, and have a wide range of applications in biological analysis, disease diagnosis and treatment, energy environment and other fields. As a special nanozyme material, single-atom nanozymes can maximize the utilization of metal atoms in addition to the advantages of general nanozymes; at the same time, single-atom nanozymes have a clear active center, which can target Its activity and selectivity are regulated.