Abstract: A high-elasticity wet suit fabric is made of fine count artificial fibers with fine denier counts and elastic yams with high elongation and recovery capabilities, having a texture designed on the basis of elastic features, knitted with a high-speed circular knitting machine and treated in a dyeing and finishing process. Such a high-elasticity wet suit fabric is laminated with an artificial rubber sponge in a laminating process to form a high-elastic wet suit fabric piece. The high-elasticity wet suit fabric of the present invention is better in elasticity than the conventional single-directional and low-elastic wet suit fabric, and capable to improve the comfort, flexibility and elongation of wet suits.