In order to explore the effects of different water-fertilizer combinations on the yield and quality of mini Chinese cabbage under drip irrigation. The test chooses “cold-resistant golden queen” as the test material，the effects of three irrigation levels:W1[60% field capacity(θf), low water]，W2(70% θf, medium water)，W3(80% θf, high water)combined with three fertilizer levels:F1(N281-P2O5166-K2O 383 kg/hm²，low fertilizer)，F2(N330-P2O5195-K2O 450 kg/hm²，medium fertilizer)，F3(N380-P2O5224-K2O 518 kg/hm²，high fertilizer)on mini Chinese cabbage yield，quality，water use efficiency and partial fertilizer productivity were studied. The results showed that the appropriate water and fertilizer ratio greatly improved the yield and quality of mini Chinese cabbage. W2F2 treatment had the highest yield，which was 163626 kg/hm². There was no significant difference between W2F3 and W3F3，while W1F3 was 29.07% lower than that of W2F2. W3F2 had the highest contents of soluble solids，soluble sugars and soluble proteins，while the content of vitamin C of W2F3 was the highest. Under the same fertilization level，the water use efficiency of medium water treatment was the highest；Under the same fertilization level，the fertilizer partial productivity showed a trend of first rising and then decreasing with the increase of irrigation water. Correlation analysis showed that there was a very significant correlation between the yield and quality indicators of mini Chinese cabbage. According to the combination of membership function and cluster analysis，the 9 water and fertilizer treatments could be divided into 3 levels. Considering the factors such as the quality，yield，and irrigation water utilization efficiency of mini Chinese cabbage，the optimal water and fertilizer treatment is W2F2(70% θf， N330-P2O5195-K2O 450 kg/hm²).