Cinnabar has sedative and hypnotic effects, and the understanding is inconsistent; It has the functions of detoxification and antisepsis; External use can inhibit or kill skin bacteria and parasites. Cinnabar is a compound of mercury, and mercury has a special affinity with sulfhydryl groups in protein. At high concentration, it can inhibit many enzymes and activities. Mercury entering the body is mainly distributed in the liver and kidney, causing liver and kidney damage and directly damaging the central nervous system through the blood-brain barrier.