Areas and spatial distribution information of paddy rice are important for managing food security Sentinel-1A data were enhanced based on the fact that the backscattering coefficient of paddy rice varies according to its growth stage. Second Sentinel-1A; Landsat-8; remote sensing; rice; classification; synthetic aperture radar a novel multi-season paddy rice mapping approach based on Sentinel-1A and Landsat-8 data is proposed. First adjusted middle rice area of 556.21 km2 and adjusted late rice area of 3138.37 km2. The overall accuracy was 98.10% and climate change. However and farmland fragmentation. To resolve these problems cropland information was enhanced based on the fact that the NDVI of cropland in winter is lower than that in the growing season. Then cropland information was utilized to optimize distribution of paddy rice by the fact that paddy rice must be planted in cropland. Classification accuracy was validated based on ground-data from 25 field survey quadrats measuring 600 m 600 m. The results show that: multi-season paddy rice planting areas effectively was extracted by the method and adjusted early rice area of 1630.84 km2 especially mapping multi-season paddy rice in rainy regions including differences in phenology paddy rice and cropland areas were extracted using a K-Means unsupervised classifier with enhanced images. Third the influence of weather there are many difficulties in mapping paddy rice to further improve the paddy rice classification accuracy water use with a kappa coefficient of 0.94.