This work investigate mainly the effect of gamma radiation on the Tea plant . firstly the antioxidant of plant pigments as carotene was extracted by heating method , different parameters were studied as solvent extraction , contact time and weight of plant .. It can be concluded that the optimum conditions for extraction of these pigments as the following, 2gm Tea plant, reaction time was 45 min and the extracted solvent was 85% . The Tea plant was irradiated at different doses of gamma radiation at (10,20,40 Gy), the structure of carotene was investigated using infrared spectroscopy . The IR spectrum investigated that gamma radiation at dose( 10,20) Gy there is no effect on the Tea plant.