A psa less than 0.01ng/mL after prostate cancer surgery indicates that the surgery was done thoroughly and there is no metastasis or recurrence for the time being, which is a better result . The psa value is mainly a way to monitor prostate cancer after radical prostatectomy, to know whether the patient has any recurrence after surgery. psa belongs to prostate-specific antigen, which is generated by prostate follicular duct epithelium. If the patient adopts radical surgery to remove all the prostate and tumor, psa will be reduced to 0.2ng/mL one month to one and a half months after the surgery, which is a normal phenomenon, and as a matter of fact, the smaller the psa value of the patient is, it means that the patient’s situation is better and better, and sometimes it can even be lower than 0.001ng/mL. Sometimes it can even be lower than 0.001ng/mL. If the psa value is greater than 0.2ng/mL on both occasions, it suggests recurrence or metastasis. Patients are advised not to worry too much, but to go to the hospital for regular checkups, and if there is any problem, it should be dealt with in time.