Rice fields are an important source of agricultural methane emissions. The deletion of applicability assessment of emission reduction technology limited the formulation of accurate carbon reduction policy for regional rice production and the improvement of the “1+N” system of China’s carbon peaking and carbon neutrality strategy. Based on the analysis of rice production status in Hunan and the regional applicability evaluation of Alternate wetting and drying（AWD）methane（CH4）emission reduction technology, this study aims to provide precise cooperative measures for high yield and emission reduction in major rice producing areas in Hunan. The rice production data of Hunan in 2016-2019 and meteorological data of various cities in many years（1960-2017）were collected, and the applicability of AWD technology in Hunan rice area and its weighted CH4 emission reduction potential were evaluated by using the AWD applicability evaluation method based on rice field water balance model and GIS tools. The method assumes that without irrigation, rainfall is the only input water source. Meanwhile, the required data is highly accessible. Therefore, this method has wider applicability. Soil texture is an important factor affecting this method. In the future, more normalized and scientific management are needed in data collection. And the water balance model also needs to be improved by inputting other relevant data. The result indicate that：From 2016 to 2019, the sown area of rice in Hunan showed a downward trend and double-season planting is gradually replaced by single-season planting. The yield per unit area of rice increased steadily, and the annual yield of single-cropping rice was 483.92kg/mu in four years, which was 21.69% and 13.19% higher than that of double-cropping early and late rice respectively. At the city and county level, there was a significant temporal and spatial differences about the applicability of AWD technology. The most suitable city is Zhuzhou to implement AWD measures. This may be due to its low precipitation and high soil permeability. Compared with early rice and single-cropping rice, late rice is more suitable to carry out AWD technology. Rainfall is the key factor to affect the applicability of AWD technology. Less precipitation and higher temperature during late rice in Hunan provide the basis for the implementation of AWD measures. And soil texture is also an important factor affecting the suitability of AWD. Rice soil will form a “hard pan” after some years. The “hard pan” will influence percolation rate compared with other. Therefore, the differences in soil physicochemical properties may also be the reason for the differences. AWD measures have great emission reduction potential（51.16%）in Hunan rice area， Considering the applicability scenario, AWD weighted emission reduction reached 471,300 ton, accounting for 5.29% of methane emission from nationwide paddy fields. In order to ensure the rice supply, implementing dynamic AWD precise control technology according to local conditions is the key measure for low-carbon transformation and high-quality development of rice production in Hunan.