In order to provide theoretical basis for rational fertilization cucumber, and for formulating scientific cultivation technique and management measures to provide the reference. This experiment was made to analyze the effects of the different NK ratio on growth, yield and quality of cucumber in the greenhouse. The results showed that cucumber of plant nutrition that influenced to grow and produce quality had significant, four processing effects were obviously superior to that of the control processing effect, the effect that potash to appropriately increase the cucumber surveyed vegetative growth and improve production quality. Which N:K2O proportion to 1:1.8 works the best, to promote the growth of cucumber plants, to improve the speed of photosynthesis, and the cucumber of the best quality, the highest yield.