Method for cleaning uncalled redundant attachments uploaded to server and server

The invention discloses a method for cleaning uncalled redundant attachments uploaded to a server and the server, and belongs to the technical field of internet attachment cleaning, and the method comprises the following steps: S1, uploading client attachments to a temporary uploading area; s2, according to the relevance between the client attachment which is confirmed to be submitted and the client attachment of the temporary uploading area, judging whether the client attachment which is uploaded to the temporary uploading area by the client in the S1 is a redundant attachment or an effective attachment; s3, moving the effective attachments to an effective attachment area for Web to call and read, and deleting redundant attachments or continuing to retain the redundant attachments in a temporary uploading area; s4, if the draft is used and submitted before the end of the agreed validity period, repeating the steps S2-S3; and if the draft is not used when the agreed validity period is up, enabling the server