This study aims to determine the effect of giving cinnamon flour in the ration to the carcass percentage and carcass weight of broiler ducks. This research was conducted in September-October 2021, Maritengae sub-district, Sidrap Regency. The design model used in this study was a completely randomized design (CRD) consisting of 4 treatments and 3 replications so that there were 12 units of observation and where each unit consisted of 5 birds so that a total of 60 observations were made. The feed was arranged according to the nutritional needs of the ducks. The treatments were: P0: No control treatment 0%, P1: Cinnamon bark flour 1% of the total feed, P2: Cinnamon bark flour 3% of the total feed and P3: Cinnamon bark flour 5% of the total feed. The results showed that the addition of Cinnamon (Cinnamomum burmanii) flour to quail feed had no significant effect (P>0.05) on carcass weight, while the addition of Cinnamomum (Cinnamomum burmanii) flour to quail feed had no significant effect (P>0.05). to the carcass percentage.