The progress and goals of the ITER project, i.e., international nuclear fusion research and engineering megaproject aimed at creating energy through a fusion process similar to that of the Sun, reflect the important role and service conditions of plasma-oriented materials. The book desbribes the composition, structure control, properties and processing methods of tungsten matrix materials and introduces the way to solve the brittleness of tungsten matrix materials. The ability and damage mechanism of tungsten matrix materials to withstand heat load and radiation damage are described in detail, and the improvement and development direction for material selection, module manufacturing and heat load testing of diverter are put forward.