【Abstract】To systematically update and review the efficacy and safety of different dosages of tamsulosin treatments on lower urinary tract symptoms (LUTS) in male benign prostatic hyperplasia (BPH) patients to provide more reliable evidence for the use of tamsulosin. Methods： Relevant paper in PubMed (1966–May 2014)， Embase (1974–May 2014)， the Cochrane Library Database (2014， Issue 5) and China National Knowledge Infrastructure (CNKI) (1995-2014) were reviewed. The assessed outcome measures included international Prostate Symptom Score (IPSS) / Boyarsky symptom score ......