The tea is the most popular drink with significant impacts in terms of physiological, medical and most addressed in all parts of the world. The research aimed to compare between the impact of green tea and black tea on bone mineral density, blood picture and blood lipids in rats. 42 female rats are used in the study one control group (7) female rats fed on standard meal and drink water, and one obese group (35) female rats from Wister strain. The obese groupwas divided into (5) groups: first group positive control fed on standard meal and drink water, second group experimental group divided into (4) groups. All groups were fed the standard meal; first and second groups drank green tea (4%, 6%); third and fourth groups drank black tea (4%, 6%). The experimente continued (10) weeksBone mineral density, blood picture, blood lipids were estimated. The result showed that the intake of the both type of tea reduced the bone mineral density specially the black tea, but improved the immunity, decreased the bad lipids and increased the beneficial lipids. It was concluded that intake green tea showed better results than black tea. Because green tea contains catechins and EGCG much higher than black tea. Moreover, green tea is more effective in reducing osteoporosis and improving the immune and blood lipids and picture as well.