The effect and role of raw earth and rehmannia keiki in soup, first of all, raw earth and rehmannia are commonly used herbs for kidney, the main role is to nourish kidney yin. The main ingredient in the pill is rehmannia, which is the main ingredient in the pill. The role of raw earth for kidney yin is a little weaker, but the kidney yin can also nourish yin and reduce fire, and the role of heat, and raw earth can cool the blood, stop bleeding, can play a role in clearing the blood heat toxicity, together with the effect of soup is very good.