L-Carnosine, also known as beta-alanine-L-histidine, widely distributes in biological tissues, especially in the organization where the cells do not spilt, such as muscle and the cerebral olfactory lobe. Early studies suggest that Carnosine is a kind of neurotransmitter may activate the ATP ase and has antioxidant activity, could protect the bacteriophage from the lethal effect of ionizing radiation.The research pointed out that Carnosine has anti-aging effect.