The present study attempts to analyze the effects of Aloe vera aqueous extract on performance, hematological parameters and histological examination in broiler chicks. Fifty, one-day old, Avian 48 unsexed commercial broiler chickens were used on a completely randomized design in 2 groups each consisting of 25 broilers. The groups included the control group (basal diet) and the other group with basal diet and Aloe vera gel supplemented in the drinking water. The results obtained regarding performance of the broilers showed that Aloe vera gel group brought higher body weight gain and feed efficiency compared to the control group; however, significant difference was observed in mean body weight between the groups supplemented by Aloe vera gel and the control group (P < 0.05) and Aloe vera was better. Aloe vera resulted in the better hemoglobin concentration and red blood cells counts which were even significantly higher than the control group. The Aloe vera gel group had the largest cecal villus height and the greatest villus height to crypt depth ratio compared to the control group. Supplementation of Aloe vera extract in the water of chicks enhanced the gut health and gut development. Aloe vera, as an additive to broiler chicken feed, has a great potential for improving growth performance, hematological parameters, intestinal health, and immune system response.