Jiangxi has a sub-tropical climate, warm and humid. It has a mean annual temperature of 16°－20°C, increasing from north to south, and a mean annual precipitation of 1,300-200 mm. Nanchang is one of the hottest cities in China.

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Besides the Han nationality, accounts for 99% of the total.there are hui,she,bai,yi,li,etc totally 38 different ethnic groups.

With a developed farming sector, Jiangxi is one of the country's major grain producers. Rice, its major crop, accounts for 80 percent of the total acreage sown to grain crops. Its cash crops include rapeseed, sugar-canes, cotton, tea, and fruit. The tiny seedless tangerines of Nanfeng are well known both on the domestic and international markets. There are dense forests and bamboo groves in the mountains on the borders. The Poyang lake is a huge natural fish pond.