Abstract: Effects of low temperature stress on germinating rates of brown rice and the content of GABA in germinated brown rice was studied in this paper,with “Long grain fragrant ” brown rice as material,different stress temperature,stress time,and germinating time as factors,germinating rates and the content of GABA as indicators. The processing technological parameter of the germination of brown rice was optimized by using orthogonal design. The results showed that GABA in germinated brown rice could be accumulated by low temperature stress,and the optimum formulation was stress temperature 0℃,stress time 2h,germinating time30 h. Under the condition,the content of GABA in germinated brown rice could reach to 35.16mg/100 g,it was2.58 times than brown rice,and 1.19 times than control germinated brown rice.