A field plot experiment was conducted to study the effect of wood vinegar on soil nutrient，salt，tomato yield and quality in greenhouse.The result showed that wood vinegar improved soil available nitrogen，available potassium and available phosphorus content，and the more wood vinegar used，the effects were more obvious，especially for in the available phosphorus which was increased by 9.27%～25.51% than that of the control.Soil organic matter and total salt content were also improved by using wood vinegar，but was not significant compared with the control.Wood vinegar reduced soil pH by 0.14～0.27.The low and middle amount of wood vinegar significantly increased the amount of plant height and yield.The low amount of wood vinegar was best，in which plant height and yield were increased by 10.53% and 11.52%，respectively.However，applying wood vinegar with high amount inhibited the growth of tomato.Applying wood vinegar increased tomato soluble sugar content from 5.27% to 10.28%，enhanced Vc content from 3.46% to 17.15%，reduced nitrate content from 4.25% to 15.33%，but there was no significant effect on the organic acids content.In summary，the proposed irrigation amount of wood vinegar was 2.25~4.50 t /(times·hm2)in greenhouse soil at tomato season.