The specific duration of doxazosin mesylate treatment needs to be decided according to the patient’s condition and the patient’s constitution, there is no strict meaning of the course of treatment, patients need to follow the doctor’s instructions to take. Doxazosin mesylate belongs to the selective α1 receptor inhibitor, can reduce peripheral vascular resistance, but also can reduce the prostate and bladder neck smooth muscle tension, clinically used for hypertension and benign prostatic hyperplasia patients. Doxazosin mesylate administration can lead to adverse reactions such as gastroenteritis, bloating and constipation, cholestasis, rash and pruritus, dorsal pain and myalgia, cystitis, urinary incontinence, chest pain and fatigue, flu-like symptoms and peripheral edema. Note that patients with recent myocardial infarction, gastrointestinal obstruction, narrowing of the lumen of the gastrointestinal tract, esophageal obstruction are contraindicated. Patients must use the drug under the guidance of a specialized physician and strictly comply with medical advice.