In Taiwan, the incidence of prostate cancer in men is gradually increasing. Prostate cancer is the sixth leading cause of cancer deaths in Taiwanese men in 2020. Androgen deprivation therapy (ADT) has been the standard of care for initial treatment of advanced or metastatic prostate cancer. Although initial ADT is effective, after one to two years of treatment, the cancer may become resistant to ADT and progress to castration-resistant prostate cancer (CRPC), which is relatively difficult to treat. A number of drugs have been approved for the treatment of CRPC in the last decade, including: chemotherapy, endocrine therapy, immunotherapy, targeted therapy and bone metastasis therapy. This article focuses on clinical trials of drugs related to the treatment of CRPC.