Yin Chen should not be drunk for a long time. Yin Chen is a medicine, once the body recovers, we should follow the doctor’s advice to stop the medicine in time. Yin Chen has the effect of clearing dampness and heat, relieving bile and eliminating jaundice (dredging the biliary tract to eliminate jaundice). Yin Chen is bitter, pungent and slightly cold in nature. Attributes to spleen, stomach, liver and gallbladder meridians. It is used for jaundice with scanty urine, dampness, warmth and summer dampness, and itching of wet sores. If the body such as orange color, belongs to the yang yellows, Yin Chen often with gypsum, gardenia; if the cold and damp stagnation, the development of yin yellows, Yin Chen is with the use of appendicia, dry ginger. If the treatment of damp-heat internalization caused by the sores and rashes itching, commonly used with cypress, Poria cocos and other drugs. Yin Chen has a certain degree of cold, can not be used indiscriminately, if you need to use the drug must be guided by a professional Chinese medicine.