The invention discloses one-time sintered chrome green frit dry particles and a preparation method thereof. The frit dry particle preparation raw materials comprise boric acid, borax, feldspar, quartz, dolomite, barium carbonate, non-calcined alumina, zirconium silicate, fluorspar, and chromium oxide. The frit dry particles have an intrinsic chrome green color and good gloss, and are semitransparent. The particles are shiny under light. Because the frit dry particles have the intrinsic chrome green color, a ceramic factory glaze line printing process can be eliminated, glaze line length can be reduced, related staffs can be reduced, modularization collection degree is improved, production efficiency is improved, cost of ceramic enterprises is reduced, and quality controllability is improved. The frit dry particles can be used in a one-time sintering method for preparing microcrystalline tiles. The sintered microcrystalline tile surface glaze has a glistening gentle chrome green color and no pore which is visible to naked eyes. With the one-time sintering process, energy can be saved, emission can be reduced, and consumption can be reduced by approximately 15% than that of twice sintering.