Abstract: 【Objective】 Investigate the effects of applying different ratios of compound microbial fertilizers on the soil nutrients and soil enzyme activities of planting cabbage, as well as to provide theoretical guidance for the application of new compound microbial fertilizers to cabbage planting, field experiments were conducted. 【Methods】 A total of six treatments were set up including CK control (chemical fertilizer alone), T₁ (chemical fertilizer + compound microbial fertilizer 20%), T₂ (chemical fertilizer + compound microbial fertilizer 40%), T₃ (chemical fertilizer + compound microbial fertilizer 60%), T₄ (chemical fertilizer + compound microbial fertilizer 80%), and T₅ (chemical fertilizer + compound microbial fertilizer 100%) and the changes of soil pH value, organic matter, and soil total nutrient content of cabbage were investigated and soil peroxidase, urease, alkaline phosphatase and sucrase among different treatments were studied. 【Results】 Compared with CK treatment, the application of different ratios of composite microbial fertilizers could effectively increase the content of organic matter, total nitrogen, total phosphorus and total potassium in cabbage soil, the size order between the treatments: treatment T₅> T₄> T₃> T₂> T₁> CK. They could effectively maintain the soil acidity and alkalinity, the pH value range between 7.75 and 8.01. And the difference between the CK treatment and the other T₅ treatments was significant (P < 0.05). 【Conclusion】 Compound microbial fertilizer can reduce soil pH value, significantly increase the nutrient content of the soil, and affect soil enzyme activity, of which T₅ treatment has the best effect. The use of chemical fertilizers with compound microbial fertilizer planting cabbage can achieve good results.