Provided is a preparing technology of preserved duck eggs. The preparing technology comprises the following steps of 1, cleaning; 2, wet salting; 3, curing of the preserved duck eggs, wherein a, a preserved duck egg curing solution is prepared, and b, the preserved eggs processed in step 2 are immersed in the preserved duck egg curing solution prepared in operation a; 4, cleaning; 5, coating, wherein the preserved duck eggs processed in step 4 are coated with seasoning pulp and subjected to standing for 4-7 days. The prepared preserved duck eggs do not contain lead and have flavor, saltiness and good condition and taste, and the economic value and market competitiveness of the preserved duck eggs are improved.