Abstract: Prostate cancer has become one of the most common clinical malignant tumors worldwide, and the incidence of prostate cancer in our country is rising. ¹⁸F-FDG is a broad-spectrum nonspecific tumor imaging agent with important value in numerous tumors. According to clinical practice, the value of ¹⁸F-FDG PET/CT imaging in the diagnosis of early prostate is limited. Recent studies found that ¹⁸F-FDG PET/CT is still crucial in the clinical staging, curative effect evaluation, and prognostic evaluation of prostate cancer. This paper mainly introduces the application and progress of PET/CT in prostate cancer.