The effects of pH,temperature and MSG were studied while using dipping treatment to accumulate γ-aminobutyric acid(GABA) in potatoes.The optimal conditions of dipping treatment were detemined by response surface analysis.The results were as follows:pH5.5,dipping temperature 33.3 ℃,MSG solution 12 mg/mL.Under such conditions,the content of GABA increased to 0.929 mg/g(fresh weight) nearly thrice as the untreated potatoes.