Using duck eggs as raw material, the effects of the type and amount of added metal salts on the quality of preserved eggs were studied by comparing the safety performance and sensory quality of preserved eggs prepared by the immersion method, using different metal salt solutions. The experimental results showed that good sensory quality was obtained in preserved eggs prepared by the addition of CuSO4, ,CuSO4:ZnSO4 = 1:1, or ZnSO4:FeSO4 = 1:1, with evaluation scores of 90.6 ± 2.4, 89.8 ± 3.2, or 88.2 ± 2.7, respectively. The sensory quality o...