| In order to study the effects of different irrigation levels and ventilation levels on some indexs of tomato, including morphological indexes，photosynthetic indexes, yield, quality and water use efficiency， with Fushan No. 1 as matierial，we did an eight-level irrigation and ventilation experiment in greenhouse. The conclusion is that there is signif-icant effect of different irigation levels and ventilation levels on some indexs of tomato，including morphological indexes， photosynthetic indexes，yield, quality and water use efficiency. Under T2 level, the yield and water use efficiency of tomato can reach a high level, being 7.28 kg/ m2 and 0. 68 mmol/mol repectively. Under T8, the sugar, sugar/ acid, hardness and soluble protein are high, being 83.47 g，4.13%, 13.61, 3.77 and 0.28 Pg/g respectively. The stem di-ameter is the maximum in T4, reaching 0.98 cm. The plant height is the maximum in T6, reaching 135. 00 cm. Under the levels of T7 and T6，physiologjical indicators of tomato is high. T8 treatment can significantly increase the plant height and dry matter accumulation in shrub layer. At the same level of irrigation, oxygenated imigation can significantly improve the quality，physiological and morphological indicators of tomato, but there is no significant effect on yield, wa-ter use efficiency and stem diameter. |