The utility model discloses a double-waterproof-layer plastic textile sleeve, and relates to the field of steel packaging. The sleeve comprises a cylinder in a hollow structure, and two side openings of the cylinder are respectively provided with a hollow stringing part. Each stringing part is provided with a first elastic hole and a second elastic hole. The interior of each stringing part is provided with a fiber rope. Two ends of each fiber rope respectively pass through the corresponding stringing part through the corresponding first and second elastic holes. The sleeve is characterized in that the cylinder is in a double-waterproof-layer structure; the double-waterproof-layer structure comprises an outer waterproof layer and an inner waterproof layer; the outer waterproof layer is made of weaving materials; the inner waterproof layer is welded at an inner layer of the outer waterproof layer; and each stringing part is provided with at least one rope-pulling opening. The sleeve provided by the utility model is better in waterproof effect, and is more convenient and quicker for application.