At present, a large amount of regulations and technical requirements of ASME standards are applied in the domestic supercritical boiler manufacturing technology. However, some flexible provisions in ASME standards are adopted for installing safety valve to the boiler without fixed soda division, which conflicts with the GB and industry regulations of safety valve. In view of engineering application problems of safety valve in supercritical boiler superheater, the set pressure, blowdown of a safety valve, field test, capacity allocation, position setting of safety valve are analyzed by comparing the national standards, industrial standards and ASME standards. It is shown that the regulations of safety valves in GB and industrial standards are unable to meet the need of practical engineering, and should be improved for effectively guiding the engineering application.