The invention relates to a corrosion prevention technique, especially to a corrosion prevention and repairing protective cover and uses thereof. The protective cover consists of an anti-soil material layer, a protection material layer, a polyester nonwoven cloth layer as well as a rust protection lipin layer from exterior to interior. A connection part is opened on the axial direction of the protective cover, two opposite sides of the connection part is equipped with an outward turnup edge fold. The inventive protective cover is convenient for dissembling, can be repeatedly used after openingand check-up, in addition, the covering layer can also endure slight damnification, and will not denaturate in the seawater surroundings after mounting. The invention not only is suitable for new seasteel construction article antisepticise and anti-soil, but also suitable for repairs of the corroded steel construction article. Thus the economy effective handy construction protection method, ensures normal work of dirt-proof boot and facilities, reduces maintenance cost, saves manpower and material resources, and improves durability.