Abstract: The effects of DDT on seed vigor and germination of peanut were studied by using TTC and hydroponic methods. The results indicated that seed vigor and vigor index were increased remarkably when the peanut seeds were cultured for 5 days in solutions containing 4mg/kg-128mg/kg DDT, and meanwhile, no significant effects on germination rate and germination index were found. Further researches on stimulation induced by DDT and its mechanism are needed.