The utility model discloses a mould convenient to adjust, comprises an upper die and a lower die. Upward open at the mould top has the plug hole, be provided with the recess that is used for holding the mould on the lower mould, go up the die cavity of mould and the shaping work piece of recess amalgamation, it includes a base and fixes the module on the terminal surface under the base to go up the mould, be provided with the connecting plate on institute's base, be provided with vertical screw rod on the lower mould, screw rod through connection board is located that the cover has the spring under the connecting plate, and it is provided with and is used for the nut that compresses tightly to lie in connecting plate top on the screw rod, still be provided with vertical connecting rod on the base, open on the lower mould have with connecting rod complex connecting hole, still include the gasket of a plurality of settings in the connecting hole. The height of die cavity is convenient for adjust by the mould that has above -mentioned structure for the not work piece of co -altitude takes shape. Need not for every only the work piece of high difference all prepare one set of mould, the repeated waste of the equipment that has significantly reduced has improved economic benefits.