Belonging to the technical field of comprehensive utilization of resources, the invention discloses a ceramic tile polishing powder based geopolymer and a preparation method thereof. The ceramic tile polishing powder based geopolymer is composed of the following raw materials by weight: 80-100 parts of ceramic tile polishing powder, 3-12 parts of modified water glass, 2-3 parts of sodium metaaluminate, 1-5 parts of sodium fluosilicate, 3-8 parts of ground zeolite powder, 0.5-1 part of a fiber reinforced material, 0.5-1 part of a water reducing agent, and 30-60 parts of water. The geopolymer provided by the invention can make heavy use of ceramic tile polishing powder, reduces environmental pollution, and has important significance for waste utilization and environmental protection.