The book adopts series of typical examples which are practically used, applies 3d modeling and computer calculation method, focuses on introducing structure and design of common casting die, die casting machine selecting, comprehensive computer format compiling for each parameter and technology points of 3d modeling, technological design method, mould assembling, simulating installation and others. Through comparing and analyzing design scheme of specific mould, the book more specifically introduces confirmation principle and method of each parameter in mould, organically combining theoretical calculation and structural design based on 3d modeling and computer calculation, providing one new modern design thought and method for design of casting die.