Prostate cancer is the most common malignant tumor elderly male in the reproductive system. Recently, the incidence of prostate cancer is very high and account for the highest incidence of all male cancers and the mortality rate is second in the Europe and American countries. Early detection, early diagnosis and early treatment are the key to improve survival and quality of life for prostate cancer patients. In terms of diagnosis, traditional medical imaging techniques, such as CT, MRI and ultrasound, have certain limitations in identified diagnosis of prostate cancer . With the development of medical molecular biology technology, molecular imaging PET/CT is being used to diagnose prostate cancer. Compared with traditional medical diagnosis technology, PET/CT can detect early malignant lesions and evaluate the therapeutic effect after treatment [4]. Relevant studies [5-7] reported that the PET/CT has high application value on prostate cancer, but because of the different study results are huge so that there is not inconsistent conclusion because of the diversity of research population, different design method，and various regions.