Objective: To investigate effect of full illumination in autumn and salicylic acid on physio-biochemistry and quality of Ginseng Radix et Rhizoma. Method: Full illumination coupled with spraying different concentration of salicylic acid(SA)

6-benzylaminopurine(6-BA) and brassinolide(Br) in autumn

activities of superoxide dismutase(SOD)

catalase(CAT)

peroxidase(POD) and malondialdehyde(MDA) were determined

contents of ginsenosides were determined by HPLC. Result: Full illumination increased capacity of photosynthesis to some degree

but it weakened physio-biochemistry

which may damage Ginseng Radix et Rhizoma.After sprayed three kinds of hormones under full illumination

ability of antioxidant and net photosynthesis(Pn) improved

SA was better than 6-BA

6-BA better than Br.Contrasted with blank group

0.2 mmol·L-1 and 1.0 mmol·L-1 SA increased by 39.9% and 43.2% for SOD

43.1% and 57.2% for CAT

63.5% and 64.5% for POD

17.1% and 16.3% for Pn;contrasted with control group

increased by 1.1% and 3.5% for SOD

40.6% and 54.5% for CAT

42.0% and 42.8% for POD

33.2% and 32.3% for Pn.1.0 mmol·L-1 SA group significantly improved contents of ginsenoside Rg1 and ginsenoside Re by comparing with the blank and control group. Conclusion: Full illumination destroys structure of Ginseng Radix et Rhizoma leaves

reduces its quality.0.2-1.0 mmol·L-1 SA possesses anti-aging

it can improve quality of Ginseng Radix et Rhizoma.