The invention relates to a disposable PE protective cover. The disposable PE protective cover comprises a protective cover body. The two sides of the top of the protective cover body protrude upwards respectively to form a left hand sleeve part and a right hand sleeve part. A cuff inner sealing structure is arranged on the edge of the inner side of each hand sleeve part, and a cuff part is arranged at the outer end of the hand sleeve part. A head opening part is arranged on the portion, between the two hand sleeve parts, of the outer side of the cover body. A bottom opening is formed in the lower end of the protective cover body. The disposable PE protective cover has the advantages that due to the structure, the manufacturing cost is reduced, processing and production are convenient, and working efficiency is improved; disposable use is promoted, cleanliness and sanitation are achieved, the material can be recycled, and environment friendliness is promoted; the disposable PE protective cover. can be used for protective tools on various specific occasions such as rain capes, bicycle riding, cleanliness and sanitation, workshop protection and inline factories, and durability and sealing performance are improved.