Objective To observe the changes of general symptom,skin status,diet addiction and bone marrow DNA content of the ageing model rat induced by D-galactose,and to study the anti-ageing effect of traditional Chinese medicine and its mechanism.Methods Rats were injected with D-galactose subcutaneously once a day for seven weeks to establish ageing rat model.To observe the changes of the general symptom and body weight,and determine skin water content,sucrose consumption and bone marrow DNA content.The administr...