Abstract: Brown adipose tissue(BAT) is a kind of normal tissue in healthy subject, which has unique physiological function. BAT will accumulate higher ¹⁸F-fluorodeoxyglucoae(¹⁸F-FDG) in the process of its being excited, and presents variety of radioactive accumulation while performing PET scan. It will benefit improving diagnostic specificity of ¹⁸F-FDG PET imaging to master the regular patterns, features of uptaking ¹⁸F-FDG and differential methods.