Abstract: For a comprehensive analysis of magnetizing the influence of water irrigation on grapes under salt stress,the experiment was carried out from April to October 2021 in Ningxia central test base.The two factors of irrigation water salinity and magnetization treatment were set.The irrigation water salinity was set to four levels（S1～S4）,and the magnetization treatment was set to two levels（M,N）,and,the conventional water source was the control（CK）.So,a total of 10 treatments were used to analyze the response characteristics of soil salinity accumulation in the root zone of grapes,physiological growth of grapes,and yield and quality.The results showed that compared to the nonmagnetization treatment,the magnetization treatment could reduce the soil water storage in the 0～100 cm soil layer by 1.5～21.9 mm,and reduce the salinity accumulation in the 0～20 cm soil layer by 13.04%～29.63%.However,when the mineralization was too high,the magnetization treatment did not significantly improve soil moisture and salinity.Salinity stress would affect the branch growth,stem diameter and leaf area of grapes.The leaf area of M_CK,MS₁ and MS₂ was higher than that of N_CK,NS₁ and NS₂ treatments improved by 1.06%,4.55% and27.51%,respectively,but when the mineralization was low,magnetization could improve the physiological characteristics of grapes,promote photosynthesis,transpiration rate and stomatal conductivity,but at higher salinity stress;mild salinity stress can promote the increase in the grape output and WUE,but with the stress deepening;magnetized water irrigation can significantly increase the grape yield and WUE.Magnetization promotes grape quality under salt stress,but the effect was not significant.After a principal component analysis,the comprehensive score of the treatment on grapes ranges from high to high:MS₁＞MS₂＞ MS_CK＞NS_CK＞MS₃＞NS₁＞MS₄＞NS₃＞NS₂＞NS₄.