Die casting dies are essential parts for die casting engineered metal products and usually fail due to a variety of reasons. The objective of this paper is to investigate the potential benefits and possibility of remanufacturing die casting dies. Firstly, with respect to the entire life cycle, a technical framework for die remanufacture is presented. And then based on the failure modes of die casting dies, life extending technologies covering the whole life cycle are reviewed according to the different stages: Pre-failure stage and Post-failure stage. While measurements within the Pre-failure stage are shortly and briefly surveyed, extensive effort is made to survey the recondition technologies-welding technologies which could be the only measure to put worn/failed dies into operation. The most commonly utilized welding technologies are Tungsten Inert Gas (TIG) Welding, Plasma Arc Welding (PAW) and Laser Beam Welding (LBW), and other types of welding techniques including Electro Spark Process and Cold Spray are also applied for repairing die casting dies. Lastly, research gaps and industrial challenges indicate that more research attention is required to finally commercialize the remanufacture of die casting dies.