The utility model discloses a mould for cold isostatic pressing and forming of a tungsten crucible. The mould comprises a core mould, a soft mould, an upper cover, a bundling piece and a hard film, wherein the soft mould is arranged outside the core mould in a sleeving manner; the upper cover is arranged at the top of the soft mould; the bundling piece is used for bundling the top and the bottom of the soft mould; the hard film is a hollow and vertically through cylinder, and is arranged outside the soft mould in a sleeving manner so as to limit the outward deformation of the soft mould. According to the mould for the cold isostatic pressing and forming of the tungsten crucible, the hard film is arranged, and the soft mould is protected by the hard film, so that the soft mould cannot expand and deform outwards during a process of filling tungsten powder; therefore, the mould is convenient to demould after machining is completed; the produced tungsten crucible blanks are uniform in size and are bright and clean in inner walls, do not have chips and cracks, and can meet subsequent machining requirements; the production efficiency is high.