The experiment was conducted for the period from (9/16/2023 to 11/18/2023), with the aim of studying the effect of injecting eggs with different levels of organic selenium and spirulina algae extract on the hatchability characteristics, productive performance of broiler chickens. The experiment of injection and hatching of chicks was conducted in the Lailani hatchery located in the Lailan area. (600) hybrid eggs (Ross 308) from a flock of 33-week-old mothers imported from Republic of Turkey were used, with average egg weight 58 g. They were randomly distributed among (6) treatments with (100) eggs for each treatment and placed in BROODTECH incubator drawers until the age of (18 days), after which the eggs were injected and the drawers were transferred to the hatchery until the chicks emerged at the age of (21 days), which were: T1 = no negative control injection, T2 = injection of 0.5 ml of deionized distilled water per egg (positive control), T3 = injection of 0.5 ml/egg containing a concentration of 10 micrograms of organic selenium, T4 = 0.5 ml/egg injection containing a concentration of 20 micrograms of organic selenium, T5 = 0.5 ml/egg injection containing 1.5 mg of spirulina algae extract, T6= 0.5 ml/egg injection containing 3 mg of spirulina algae extract. The data were subjected to statistical analysis by applying one-way ANOVA using SAS software. Differences between treatments were tested using Duncan's multiple comparison test, at a significance level of P ≤0. 05. The study conducted that inject the egg with organic selenium were enhance the bird weight and the weight gain, moreover, the both of organic selenium and the spirulina extract affected significantly on the hatching rate, feed intake and FCR.