By analyzing the current situation of industrial development and water use in Jiangxi province，and calculating the industrial water demand of each district and city in the planning year，this paper puts forward a preliminary scheme for the industrial development scale of Jiangxi province in the planning level year constrained by the red line of the total water consumption and different water conservation levels according to the principle of ＂four water-based principles＂. Under the high，medium and low water efficiency schemes，the industrial water demand of Jiangxi province in 2025 and 2030 will be 5.92～6.18 billion m3 and 6.48～7.01 billion m3 respectively，and the water shortage will reach 481～743 million m3 and 408～942 million m3 respectively; Under the constraint of the red line，the industrial added value in 2025 and 2030 will be 1 183.95～1 236.33 billion CNY and 1 558.67～1 687.35 billion CNY respectively，which will decrease by 109.2～161.57 billion CNY and 113.27～241.95 billion CNY respectively compared with the conventional forecast value. The red line of total water consumption has restricted the rapid development of Jiangxi's industrial economy to a certain extent，therefore，the paper puts forward relevant measures and suggestions for the future industrial development of Jiangxi province under the rigid constraint of water resources.