The sterilization process of ethylene oxide was verified according to the standard GB18279--2015,ISO11235-2014. The verification process is divided into three parts: IQ (installation confirmation), OQ (operation confirmation) and PQ (performance confirmation). According to the relevant standards of ethylene oxide sterilization, the company focuses on the confirmation of ethylene oxide sterilizer (IQ,OQ), and assist customers to develop reasonable sterilization process (PQ), guide customer specification verification process and daily control to ensure that the equipment can continuously and steadily produce qualified products.