In recent years, under-balanced drilling (UBD) and managed pressure drilling (MPD) have been rapidly developed thanks to their contributions to penetration rate improvement and effective reductions in both the occurrence of down-hole problems and non-productive time. At present, a considerable number of industry standards have been made for the above two techniques in China and abroad. Starting from oil industry standards, IADC standards and API standards, the paper focused on the discussion on the current situation of standards of UBD and MPD, studied the main contents in the future standards of managed pressure drilling in China.