The Medical Device Master File is a form of technical documentation submitted by its owner to the medical device technical review authority. It is used to authorize medical device registration applicants to reference it as part of their registration submission materials when applying for medical device registration. The Medical Device Master File system facilitates the selection of raw materials and key components by medical device manufacturers and simplify the registration and application process. Simultaneously, the principle of voluntariness and confidentiality for the master file registration effectively protect the intellectual property rights of the master file owner.