Abstract: [Objective]This study intended to investigate the effect of fertilizer-water treatments on quality of Mu Jujube. [Method]In this paper, Mu Jujube samples were collected from Yanchun country. Vitamin C and Flavones and Dry Output Rate of Mu Jujube under different fertilizer-water treatments were analyzed. [Result]The results showed that the quality of Mu Jujube significant were raised by fertilizer-water treatments. The effect of nitrogen was higher than the effect of water. Vitamin C contents of Mu Jujube under treatments of nitrogen 0.5kg per tree and water level 60 kg per tree which was the highest was 492.3 mg/100g. Flavones contents of Mu Jujube under treatments of nitrogen 0.5kg per tree and water level 20 kg per tree which was the highest was 74.7 mg/100g. Dry output rate under treatments of nitrogen 1.0kg per tree and water level 60 kg per tree which was the highest was 74.1%. [Conclusion]With the Vitamin C and flavones contents were concerned, the nitrogen application rate at 0.5 ~1.0 kg per tree and water level at 60 kg per tree was recommended. The application of nitrogen fertilizer and water level would increase vitamin C and flavones contents.