Abstract: In order to compare the differences in egg quality between white-shell line and green-shell line in black duck with white chest（BDWC）, 50 eggs from white-shell line and green-shell line of 300-day-old BDWC were randomly selected for the determination of 10 egg quality indexes in early April of 2019 and 2010. Then these indexes were compared between the two lines and the correlation between the indexes was analyzed. The results showed that albumen height of white-shell line was significantly lower than that of green-shell line in 2019（P＜0.05）; egg shape index of white-shell line was significantly higher than that of green-shell line in 2020（P＜0.05）. At the two time points, there were positive correlations between egg weight and yolk weight, shell thickness and shell strength, and albumen height and Haugh unit, and all reached significant or extremely significant levels（P＜0.05 or P＜0.01）. The results indicated that there was little difference in egg quality between white-shell line and green-shell line, so yolk weight could be selected by egg weight in BDWC.