The invention relates to a process for preparing a bright printing coating polyester fabric, which comprises the following steps of: firstly, performing calendaring treatment on a polyester base fabric and coating two layers of polyurethane membranes on the surface of the basic fabric in turn; secondly, printing textures on the coating face of the fabric; thirdly, coating a third layer of polyurethane membrane on printing face; and finally, executing processes of washing the fabric with water and the like, detecting an obtained product and storing the qualified product in a warehouse. In the invention, the coating fabric has the third layer of polyurethane membrane after texture printing to prevent the printing face of the fabric from corrosion and interference from the external environment, so that the color fastness of the printed fabric is effectively improved and the high transparency and glossiness of the polyurethane membranes ensure that the color and luster of the printing coating fabric are brighter and more long-lasting after the polyurethane membranes are tightly adhered to the printing face. The process can well meet the appearance requirements of the market on the high color fastness and the bright and long-lasting color and luster of the coating fabric.