The invention discloses a dual-component water-based bright colorized tile decorative crack-sealer. The decorative crack-sealer is prepared from an ingredient A and an ingredient B by mixing according to a weight ratio of 1: 1-2. The ingredient A comprises, by weight, 70-90 parts of epoxy resin, 5-20 parts of an emulsifier, 0.5-2 parts of a rheology modifier, 3-20 parts of a flexible additive and 2-4 parts of a surfactant. The ingredient B comprises, by weight, 50-90 parts of a curing agent, 10-30 parts of pigments with different colors and fillers, 4-30 parts of deionized water, 4-10 parts of a brightening agent, 0.1-1.5 parts of a dispersant, 1-5 parts of a crack-resistant agent, 0.1-2 parts of a thickening agent, 0.1-1.5 parts of a dispersant, 0.25-2 parts of an antifoaming agent, 0.5-2 parts of a leveling agent, 1-5 parts of an anti-settling agent and 2-6 parts of an anti-sagging agent. The decorative crack-sealer has high brightness and high hardness, does not mildew, blacken, shrink, collapse, sag and fall, can resist water, oil stain, acid, alkali, etch, scrubbing and water immersion, has good adhesion and has excellent aesthetic feeling.