The exhaust gas cleaning (EGC) system has been installed on more and more ships to reduce the sulfide emission from the ship exhaust gas, aiming at reducing the environment pollution generated by the ship exhaust gas and meeting the relevant regulations of the MARPOL 73/78 ANNEX VI amendment. The SCHEME A certification plan of the EGC system of a ship is researched from the system design, testing requirements and requirements of standard achievement. The research results show that the scheme design and verification results can meet the requirements of the rule, the EGC system can be used on ships of the same design without testing.