The invention discloses a static barrier mixing device for semi-solid-state alloy pulp-making. The static barrier mixing device comprises a barrier mixing head, a flow concentrating comb plate, a material barrel, a spray nozzle, a spray nozzle flange and a heater, wherein the barrier mixing head is statically arranged in a cavity; and a plurality of inclined slots are spirally formed in the outer wall of the barrier mixing head. Through the improvement on the structure, the plurality of inclined slots are spirally formed in the outer wall of the screen mixing head, metal melt is pushed to the barrier mixing head by utilizing pressure, and crystal nucleus of the metal melt is refined through the shearing action of the barrier mixing head and the material barrel, so that the semi-solid-state pulp preparation requirements are met. The static barrier mixing device has the characteristics of being simple and reasonable in structure, excellent in performance, quick to assemble, convenient to operate, low in manufacturing cost, easy to produce and realize, safe and reliable, and the like, and is high in practicability.