Acknowledgment

National Pediatric Cancer Surveillance Annual Report（2022）was compiled under the guidance and support of the National Health Commission，with the cooperation of local health commissions and pediatric cancer surveillance sites.We would like to extend our appreciation to the Human Tissue and Organ Transplantation and Medical Big Data Center，China Population and Development Research Center，and Statistical Information Center of the National Health Commission for their data assistance in compiling this annual report.This annual report embodies the hard work of the relevant staff of surveillance sites across the country，the developers of the national pediatric cancer surveillance platform，and the members of the writing team.We would like to express our sincerest gratitude to them all for their support and assistance in the preparation of this report.