Abstract: 【Objective】 To study the effects of different concentrations of silicon on the germination of barley under drought stress with different treatments and comprehensively evaluate the drought resistance of barley seedlings under each treatment, so as to determine the best treatment. 【Methods】 Barley variety 'Xinpi6' was treated respectively by soaking seeds with silicon solution before germination (treatment A) and adding silicon culture solution to the germination box (treatment B).The concentration of Na₂SiO₃·9H₂O was set at 0.0, 0.5, 1.0, 1.5 and 2.0 mmol/L in both methods to study the effects of drought stress on germination indicator, morphological indicator and growth of barley. 【Result】 In the treatment A, with the increase of silicon concentration, germination potential, germination index, vigor index, root length, bud length, coleophyllum length, root number, fresh and dry weight of root and bud all increased first and then decreased, while the root-bud ratio decreased first and then increased.There was no significant difference in germination rate under different silicon concentrations.In the treatment B, there was no significant difference in all indicators at 0.0 and 0.5 mmol/L Na₂SiO₃·9H₂O concentrations.The root shoot ratio decreased with the increase of the silicon concentration from 1.0 to 2.0, while other indicators increased with the increase of silicon concentration. 【Conclusion】 It was the best for the drought resistance of barley seedlings treated by soaking of seeds with 1.0 mmol/L Na₂SiO₃·9H₂O.