Abstract: 【Objective】 To study the effect of NaCl stress on Seed Germination of chime by analyzing and comparing the salt tolerance of Inner Mongolia chyme 186 and Xinjiang chyme MZ04. 【Methods】 In this study, the materials were treated by seed germination test, and the germination potential, germination rate, radicle root length, radicle stem length, germination index and vigor index were calculated.In the process, there were significant differences in germination power, germination rate, germination index, vigor index, radicle and radicle length among the tested materials. 【Results】 With the increase of NaCl concentration, each index decreased at 200 and 250 mmol / L.The germination rate, germination potential, germination index and vigor index of Xinjiang chyme MZ04 under mmol / L treatment were significantly higher than those of Inner Mongolia chyme 186 in mainland China, and the radicle and radicle length of Xinjiang chyme MZ04 under different concentrations of NaCl treatment were higher than those of Inner Mongolia chyme 186 in mainland China.Through statistical regression analysis, it was found that during the process of NaCl stress, the concentration of NaCl was negatively correlated, and the concentration of salt tolerance semi inhibition of Xinjiang chyme MZ04 was higher than that of Inner Mongolia chyme 186.The germination rate of Inner Mongolia chyme 186 and Xinjiang chyme MZ04 was 107.39 mmol / L, 4.18 mmol / L higher than that of Inner Mongolia chyme 186, the activity index was 45.81 mmol / L, 5.2 mmol / L higher than that of Inner Mongolia chyme 186. 【Conclusion】 In the process of salt stress, the related indexes of germination are mainly determined by salt concentration and salt tolerance of varieties, and the salt tolerance of Xinjiang chyme MZ04 seed in germination period is higher than that of chyme 186.