Abstract: In order to analyze effect of water-solubility fertilizer as base fertilizer on growth and yield of Brassica chinensis，a fertilization experiment was conducted in well water irrigation area of Qingyuan town，Wuwei.Results showed that basal application of water-solubility fertilizer （including Ca+Mg） could improve plant height，development degree，rosette diameter，leaf number per plant，leaf traits and leaf green of Brassica chinensis.Compared with blank control group，it could increase the yield by 108.1%，12.1% and ratio of fertilizer input to output value was 1∶23.3.It could provide theoretical guidance for basic application of water-solubility fertilizer on yield and efficiency of other crops.