Abstract: Gout is a kind of metabolic disease caused by the deposition of uric acid crystals, whose acute present as joint redness, swelling, fever and pain.It can develop into a chronic disease.And long-term recurrent attacks may be accompanied by a variety of serious diseases, which can cause severe impacts on health.This article introduces the principle of dual-energy CT imaging, and the diagnostic value of dual-energy CT in acute gout and the potential application in evaluating the efficacy of chronic gout, and the known artifacts and corresponding measures.