The invention relates to the field of textile fabric, in particular to protective jacket fabric having the effect of water supplementation. The fabric can wrap soil during transportation and can havethe effect of water supplementation on roots, and therefore it is effectively avoided that since the roots lack water during transportation, plants wither. The protective jacket fabric structurally comprises a first arc-shaped fabric body with an upper opening, an annular cloth jacket is fixedly arranged at the upper opening of the first fabric body, tying ropes penetrate into the cloth jacket, anotch is formed in the front side face of the cloth jacket, and the two tying ropes penetrate out of the notch; a second fabric body is connected to the first fabric body through a sticking band, andthe upper edge of the second fabric body is located in the middle of the first fabric body; the first fabric body is of a composite structure, and the second fabric body is of a composite structure. The protective jacket is simple in structure, convenient to use and suitable for various places.