The efficacy and effect of Tamsulosin (i.e., Tamsulosin Hydrochloride) is mainly to improve urinary obstruction due to prostate hypertrophy, the specific use of medication as prescribed by the doctor. Tamsulosin hydrochloride is a new type of α-blocker, can reduce smooth muscle tone, lower urinary tract resistance, improve urination due to prostate hypertrophy, suitable for mild to moderate prostate enlargement caused by non-serious urinary disorders and other symptoms, such as increased nocturia, urination, urinary frequency, difficulty in urination, etc., but is not applicable to the situation of serious urinary retention has occurred. Adverse drug reactions include dizziness, stumbling sensation, decreased blood pressure, increased heart rate, skin rash, nausea, vomiting, stomach upset, abdominal pain, lack of appetite, liver function abnormalities, nasal congestion, swelling, dysphagia, tiredness, etc. Allergic reactions such as skin rash should be discontinued. Contraindications include hypersensitivity to the drug, renal insufficiency, and caution in postural hypotension. Long-term use of the drug should be regularly checked liver function. Specific use of the drug should be carried out under the guidance of a specialist, not unauthorized use of the drug.