Abstract: Field plot experiments were carried out to study the effect of leaf liquid fertilizer on the yield and quality of tomato in green house .The results showed that spraying leaf liquid fertilizer not only can increase the tomato yield, but also can increase the content of soluble mass matter ,Vc ,crude protein and the ratio of reducing sugar/organic acid ;Reduce the content of organic acid and NO-3-N .therefore ,it can improve the interior quality of tomato .Among different treatments ,1000 times is the best one .