This experiment was conducted to evaluate the impact of zinc supplementation on pathology of heart in broiler chicks. Twenty broiler chicks were taken for the experiment. One control group and three treated groups. All the treated groups were supplemented with 300mg/kgb.w. (Low dose), 600mg/kgb.w. (Intermediate dose) and 900mg/kgb.w. (High dose) of Zinc for 21 days. Heart was selected for the histopathological study and effects of different levels of zinc were studied in heart tissue. Sections of the heart and blood vessels from the Zn-treated broiler chicks did not differ from their controls and their was no any change was found in the heart of all.