The invention relates to the technical field of jeans fabrics, in particular to a knitted jeans twill shaping fabric and a preparation process for the same. Yarns with different properties are used as plating yarns and ground yarns, so that the fabric is endowed with the characteristics of comfort, plasticity, elasticity and the like, and the serviceability of the fabric is improved. The front and back surfaces of the fabric are covered with cotton yarns, so that the fabric is ensured to have the skin-friendly comfort of a cotton fabric, and also has higher breathability. The shrinkage of the fabric is kept stable by low temperature and low speed, so that the resilience and the restorability of the fabric are maximized, and the fabric is endowed with a better shaping effect and higher comfort.