The invention provides a high efficient lignite heat discharge dehydration system. The system comprises a coal inlet storage hopper, a powder and ash recovery separation moisture discharge system, a drum-type dehydration centrifugal heating coal storage tank and a fuel coal heating system, the coal inlet storage hopper is connected with the drum-type dehydration centrifugal heating coal storage tank by a coal supply feeding conveyor, one end of the drum-type dehydration centrifugal heating coal storage tank is connected with the coal supply feeding conveyor, the other end is connected with a transmission device for outputting finished products, the inner and outer circulating heat supply pipelines are arranged on the drum-type dehydration centrifugal heating coal storage tank, and the drum-type dehydration centrifugal heating coal storage tank is connected with the fuel coal heating system by the inner and the outer circulating heat supply pipelines. The high efficient lignite heat discharge dehydration system of the invention can not only lower the ash content and control the volatile content, but can also remove the water of more than 80 percent to 90 percent in crude coal, the produced lignite can fundamentally change the physical structure, the density contraction is strengthened, the lignite has no backwater, no weathering, no spontaneous combustion and does not limited by the selling radius, and has thermal value achieving 5000 to 6000 kcal, thereby being an ideal industrial power fuel.