The invention discloses a rapid die changing mould. The rapid die changing mould is characterized in that a front die core bottom plate is arranged on a front die core, the front die core is flexibly arranged on a rear die core, and the rear die core is arranged on a rear die core bottom plate; a surface needle plate is fixedly arranged on a bottom needle plate, the surface needle plate is provided with a thimble and a resetting rod, the thimble passes through the rear die core bottom plate and stretches into a die cavity of the rear die core, and the resetting rod is sleeved with a resetting spring; the resetting rod passes through the rear die core bottom plate and is inserted into the rear die core, and the front die core bottom plate, the front die core, the rear die core, the rear die core bottom plate, the surface needle plate and a bottom needle plate are connected into a whole; a die frame B plate is arranged on a die leg, the die leg is arranged on a bottom plate, a hollow cavity is formed in the die leg, and the resetting rod, the resetting spring, the thimble, the surface needle plate and the bottom needle plate are placed in the hollow cavity; and the front die core bottom plate and a die frame A are arranged in a demountable manner, and the rear die core bottom plate and the die frame B plate are arranged in the demountable manner. The rapid die changing mould provided by the invention can take the whole inner die structure out in one-step operation to realize rapid die changing, and the injection molding production efficiency is improved.