Disclosed are a patch for sportswear, which is fixed on the surface of a T-shirt or team uniform, and a method of producing the same, wherein the patch includes a substrate layer, including a polyester fabric layer having a pattern, a colorless polyurethane base coating layer, and first, second and third polyurethane-mixed coating layers, which are sequentially formed; an anti-migration shielding layer, including a hot-melt adhesive sheet layer, a first primer coating layer, a first barrier coating layer, a second barrier coating layer and a second primer coating layer; and a double-sided adhesive layer for bonding the substrate layer and the shielding layer to each other, whereby the patch can be simply fixed on a finished sportswear product, does not migrate over time, and is not stripped even after washing at least 50 times, thus exhibiting high durability, and whereby environmentally friendly production of the patch is possible.