In general the PSA is lower than 4ng/mL can stop the drug. However, whether to stop the drug can not be determined only based on one indicator, but also based on the results of various examinations of the patient to determine. 1. If the patient is diagnosed with prostate cancer and PSA is increased, the patient can take medicine to make the tumor shrink or inhibit the growth of the tumor, which is to remove the “nutritive effect” of androgen on the prostate to achieve the therapeutic purpose. However, it is not a cure, but only a temporary inhibition of tumor growth. Once the medication is stopped, the PSA may rise again. 2. Radical prostatectomy is the most effective treatment for prostate, and the decision of whether to perform lymph node dissection is based on the patient’s risk stratification and lymph node metastasis. Patients are advised to go to the hospital for examination and listen to the attending physician’s opinion to decide whether to stop the medication or not, and not to stop the medication without authorization.