The invention relates to an enterprise file control method based on a life cycle. The method comprises the steps that S1, for approved files, a system administrator gives a unique identity card code to each file and enters a file control management system; S2, in the using process, the system automatically adds a seal of an attributive management functional department to the files according to thevalidity of the files; S3, meanwhile, QR code information of the file life cycle is automatically added; and S4, when the files exceed the valid period, the files in use are automatically invalid. The method is suitable for an enterprise to manage complicated files, it is easy to manage files in different versions, the method is convenient to use by staff, and meanwhile the situation that hiddendanger is caused by usage of files in wrong versions is avoided.