Need. The duplicate checking range of the detection system is to check the contents between the catalogue and the reference documents. If the whole paper is submitted, the paper cover will usually be submitted at the same time, that is, it is not necessary to delete the paper cover before submission. Actually, don't worry too much about this. For regular paper duplicate checking websites, especially authoritative duplicate checking systems, users' personal information will not be leaked, and there is no need to worry that the cover will not be deleted, which will increase the duplicate checking rate.