Malondialdehyde（MDA） content and the activity of catalase（CAT） and peroxidease（POD） of mung bean seedlings were measured under hypergravity of 600×g or 1000×g for 4 h,8 h and 16 h.The results showed that in the same gravity conditions,shorter time can reduce the content of MDA and lower levels of lipid peroxidation.To a certain extent,less gravity and shorter time can increase activities of CAT and POD of mung bean seedlings.In this experiment,hypergravity of 600×g for 4 h performed better.