Ginger is a common condiment used by people. But rotten ginger is poisonous, can not eat. Some people say that "rotten ginger does not taste rotten", there is no scientific reason. Ginger in the process of rotting, a series of chemical changes will occur, which has a toxic substance called safrole, is a very toxic organic matter, it can make the liver cell degeneration. People consume a small amount, but the toxicity of its damage to liver cells is large, especially for hepatitis patients liver cell damage is greater. Therefore, never consume rotten ginger.