【Objective】Organic fertilization is one of the most important measures to maintain the fertility level of agricultural soil. However, it is still unclear whether soil fertilization can effectively cope with the frequent occurrence of compound extreme weather events and maintain the stability of soil organic carbon (SOC). Moreover, soil dissolved organic matter (DOM) is an important indicator to measure the dynamic changes of SOC and also a core participant in the process of SOC accumulation and stability. Nevertheless, it is still unclear how extreme weather events may affect DOM and consequently its contribution to SOC accumulation and stability. 【Method】A short-term simulation experiment was conducted using rice paddy soils, and headspace gas sampling, gas chromatography, ultraviolet-visible absorption and fluorescence spectroscopy were applied to compare the effects of high temperature (32 ℃)-precipitation on the emission of CO2 and spectral characteristics of soil DOM in different fertilized soils (PK: phosphorus-potassium fertilizer; NPK: nitrogen-phosphorus-potassium fertilizer, LOM: low-volume organic manure; and HOM: high-volume organic manure). 【Result】The results revealed that (1) the variation range of cumulative soil CO2 emissions in the organic fertilization treatments (LOM and HOM) was relatively small, ranging from 8.92% to 14.17% during high-temperature or high-temperature after precipitation incubations. This effectively increased the resilience of organically fertilized soil in response to external high temperature-precipitation events. (2) Compared with the first day (Day 1) of high-temperature incubation, the soil DOM content in LOM and HOM treatments significantly increased by 7.81-14.74 mg·kg-1 (P<0.05). However, the HOM treatment significantly reduced the soil DOM aromaticity (SUVA254), hydrophobicity (SUVA260), and various fluorescent substances, indicating that under high temperature stress, organic fertilization only changed the structural composition of soil DOM and did not promote the emission of CO2. (3) High temperature incubation after precipitation (Day 28) significantly reduced the soil DOM content by 64.05%-80.44% (P<0.05) when compared with Day 14. Also, organic fertilization significantly increased the SUVA254 and SUVA260 indices of soil DOM and the humification index (HIX) compared with other treatments, thereby reducing CO2 emissions. The increase in protein-like substances (fluorescence peaks B and T) caused by organic fertilizer itself did not lead to an increase in soil CO2 emissions.【Conclusion】Overall, organic fertilization, especially the organic substitution of 25%-50% nitrogen fertilizer, can improve the stability of soil organic carbon, enhance its agricultural adaptability in extreme weather events under the conditions of this study. The findings of this study provide a scientific basis for optimizing agricultural fertilization models, and promoting sustainable agricultural development.