For gaining popularity and greater demand for medicinal plants, various medicinal plants are taken into considerations for therapeutic research. Green tea is the processed natural product consumed as a healthy drink for refreshment worldwide. Its leaf is consumed which has medicinal values such as antioxidant activity, antimicrobial activity and it has several phytochemical constituents. It contains 15-20% protein and 1-4% amino acids, 5-7 % carbohydrates and 10-25 % major antioxidant catching tannins. Thousands of bioactive components are present in green tea as polyphenols which is the key factor for preventing many diseases. The objective of this manuscript is to review of therapeutic properties of green tea.