Aging is the body's normal and complicated life process,which is a degenerative changes in the tissues and organs. As humans enter the aging society, the elderly physiological and pathological characteristics of the body become hot study object. Just as the 2012China development report showed, the people aged60and above in2011reached184.99million, accounting for13.7%of the national population, which is increased by0.47%compared to2010;while the people of65years and older reached122.88million, accounting for...