The invention relates to the technical field of galvanizing of steel sheets, and discloses a preparation technology of a galvanized steel sheet with continuous hot-dip spangles. The preparation technology comprises the following steps of uncoiling, and cleaning; annealing: sending a steel sheet into an annealing furnace to reduce and calcine, wherein the annealing atmosphere is a H2 (hydrogen) and N2 (nitrogen) mixed gas, and the annealing temperature is 720 to 800 DEG C; hot-dip: cooling the steel sheet by air, cooling to 470 to 520 DEG C at the average temperature, sending into a zinc pot, and performing hot-dip, wherein the temperature of the zinc pot is 455 to 470 DEG C, and the content of antimony in the zinc pot is 0.7 to 1.0% (in percentage by mass); spraying: enabling an air knife to scrape the excessive hot-dip liquid on the steel sheet, spraying and cooling, wherein the temperature of spraying liquid is 55 to 60 DEG C, and the spraying liquid is a monosodium phosphate water solution; flattening, and passivating; coiling. The preparation technology has the advantages that the production cycle is short, the spangles are small and uniform, and the mechanical property and anticorrosive property of the prepared steel sheet are excellent.