In this study，the effects of three types of soil acidification improvers，i.e. lime，soil conditioner containing silicon and potassium and soil conditioner containing humic acid，on the soil nutrients，quality and fruit quality of grapes were compared. The results showed that three kinds of soil acidification conditioners significantly improved the soil acidification，and the soil pH was increased from 5.78 to 5.92，6.37 and 6.55 by lime，soil conditioner containing silicon and potassium and soil conditioner containing humic acid，respectively. Compared with lime treatment，the application of soil conditioner containing silicon，potassium and humic acid reduced the concentration of exchangeable aluminum by 31% and 25%，respectively，while increased the concentration of organic matter in soil. The concentration of exchangeable calcium and exchangeable magnesium in the soil treated with humic acid soil conditioner increased significantly，compared with soil treated with the other two soil acidification improvers. There was no significant difference in the total arsenic，cadmium，chromium and lead content in soil and fruit，after three kinds of acid conditioners used. Moreover，the water content of grape fruit was significantly higher in silicon-potassium conditioner treatment than lime treatment；the total soluble sugar of grape fruit was significantly higher in silicon-potassium and humic acid soil conditioner treatments than that of lime treatment；and the total amount of free amino acids in grape fruit was significantly higher in the humic acid soil conditioner treatment than lime and silicon-potassium soil conditioner treatments. In conclusion，compared with lime，soil conditioner containing silicon and potassium and humic acid had better effect on alleviating soil acidification；moreover it could improve the soil quality，by reducing soil exchangeable aluminum concentration while improving the concentration of organic matter，exchangeable calcium and magnesium，and improve fruit quality.