The utility model relates to a multi-weave seamless sport vest. Most of common sport vests worn by women are of a planar type and are single in weave structure. According to the surface layer part of the vest, a double-faced plaiting stitch is adopted in the front middle part and the back middle part; a plain weave is adopted in the parts from the chest portion to shoulder straps; a stripping weave is adopted in the part around the chest portion and the parts from the left side and the right side to the back middle portion. According to the inner layer part of the vest, the chest portion of the inner layer is looser than the outer layer, and the plain weave is adopted in the chest portion of the inner layer; the double-faced plaiting stitch is adopted in the front middle part, the middle part is fixed through non-elastic yarn, and then the chest portion protruding effect is achieved; the double-faced plaiting stitch is adopted in the back middle part; a full needle weave is adopted in the two sides of the back part; a leno weave is adopted in the part around the chest portion and the left and right sides. The bottom edge of the vest is a double-layer edge where the leno weave is adopted. The vest is integrally knitted through a seamless knitting machine, the two sides of the vest are free of joints, and therefore the dual effects of being seamless and close to the skin can be achieved; because the vest is made of double-layer fabrics, the elasticity and elastic recovery force are increased, and the shape keeping function is achieved.