This study was conducted to compare the effects of diets Borage Powder and control (no additives diets) on broiler’s average blood cell counts and immune system on the broiler chicks. Sixty four male broiler chicks (Ross 308) randomly allocated into one of two treatments with four replicates of eight chickens based on a completely randomized block design. Diets were include control (no additives diets) and BP1 (5 g/kg Borage Powder) BP2 (7.5 g/kg Borage Powder). Results have been shown that number of Wight blood cell (WBC) affected by BP1 and BP2 diets as those increase number of WBC. These results showed that addition of borage powder to the broiler diet improved Immune System.