Plot experiments with cauliflower were conducted under different fertilization treatments: single application of chemical fertilizer ( H),mixed application of organic and inorganic fertilizers ( HY),and straw manuring and application of chemical fertilizer ( HJ). The experimental results showed that the HJ treatment significantly increased the cumulative seasonal CH_4 emission by 22. 86% and 13. 16% respectively over the H and HY treatments. The H treatment increased the cumulative seasonal N_2O and CO_2 emissions respectively by 23. 66% and 24.44% over the HY treatment and respectively by 9. 63% and 11. 88% over the HJ treatment. Both HY and HJ treatments made the cauliflower yield and the cauliflower s vitamin C,protein and soluble sugar contents higher than the H treatment,the yield increasing by 16. 25% and 17. 92%,the vitamin C increasing by 8. 79% and 8. 08%,the protein increasing by 20. 99% and 16. 67% , and the soluble sugar increasing by 15. 79% and 20. 47%. Comprehensively considering such indexes as global warming potential,greenhouse gas intensity,and cauliflower yield and quality,both HY and HJ treatments were better,obviously decreasing greenhouse gas warming potential and intensity and improving cauliflower yield and quality.