The invention discloses fluorite dense medium beneficiation suspension liquid used for multi-segment separation of fluorite ore beneficiation. Liquid water is adopted as a carrier in the suspension liquid, and 1.3-2.1 g of silicon iron powder is added in the suspension liquid every one cubic centimeter volume. Slurry is adopted as a dispersing agent in the suspension liquid. The silicon iron powder added in the suspension liquid comprises 80%-95% of silicon iron powder particles with the granularity of -0.074, 58%-90% of silicon iron powder particles with the granularity of -0.044, and smaller than 20% of silicon iron powder particles with the granularity of -0.010. The slurry is associated ore of fluorite ore, the slurry is in a particle shape and comprises not smaller than 90% of slurry particles with the granularity of -0.038. The fluorite dense medium beneficiation suspension liquid is suitable for fluorite ore beneficiation and good in stability and has proper density and fluidity, a weighting agent in the suspension liquid can be recycled, and the fluorite ore dense medium beneficiation effect is improved.