The invention discloses a screen mesh filler shear emulsifying machine. The screen mesh filler shear emulsifying machine comprises: a mixing chamber, which comprises a turbulent mixing zone, a shear crushing zone, a feeding pipeline allowing a single-component fluid to be guided to the turbulent mixing zone, and a discharge pipeline allowing a mixed fluid to be discharged out from the shear crushing zone; a stirring element, which is driven by a power mechanism to mix fluids in the turbulent mixing zone and provide an axial flow power for the fluid; and a shear crushing element, which comprises a screen mesh filler bed which rotates under the action of the power mechanism to perform primary shear emulsifying for the fluid in the shear crushing zone, and dynamic and static shear rings whichare arranged at the outer side of the shear crushing zone and perform secondary shear emulsifying for the fluid. The screen mesh filler shear emulsifying machine provided by the invention has the following advantages: by comprehensive utilization of a mixing mechanism and a dispersion mechanism, and through reasonable mechanical structure design, integration of mixing and dispersion is realized;the number of equipment is reduced; production efficiency is improved; high-efficiency mixing and dispersion of phase-change emulsions can be completed; and large-scale preparation of a phase-change emulsion is realized.