Abstract: Tea garden soil is an important N₂O emission source. Understanding the N₂O emission factors of tea garden soil can provide a theoretical basis for reducing N₂O emission. Based on a global meta-analysis of tea garden soil from field in-situ monitoring and microcosm incubation test, we quantify the annual N₂O emission of tea garden soil, and analyze the main influencing factors. Results suggested that the annual N₂O emissions from field in situ monitoring of soil in global tea gardens averaged 16.82 kg hm⁻² (95% confidence interval is 12.99 - 21.27 kg hm⁻²), while the microcosm incubation showed 0.04 mg kg⁻¹ d⁻¹(95% confidence interval is 0.02 - 0.07 mg kg⁻¹ d⁻¹). The average EF_d of tea garden soil was 2.25%, higher than the default value of Intergovernmental Panel on Climate Change (1%). The variance partition analysis (VPA) found that the amount of nitrogen application explained the maximum percentage (49.71%) of N₂O emission. The N₂O emissions from tea garden soil could be reduced 35%, 52% and 55% by application of controlled-release fertilizer, biochar and lime material, respectively. We conclude that a huge amount of N₂O emission from tea garden soil is induced by intensive fertilization, so the N₂O emission can be effectively reduced through improved fertilization measures.