The possible diseases of weak urination in men are: 1. Prostatic hyperplasia, which is the most common cause of weak urination in men. When the prostate gland is hyperplastic, the urethral lumen gradually narrows, when the urethral resistance increases, the bladder needs to overcome the greater urethral resistance during urination, there will be a decrease in effective urinary pressure, and the patient will feel weak in urination; and as the degree of hyperplasia increases, the symptoms of weakness in urination will gradually increase. It is recommended that men over the age of 40 undergo routine ultrasound examinations of the prostate and further urine flow rate examinations to assess the symptoms and scores of urinary weakness to determine whether oral medication, watchful waiting treatment or surgical treatment is required. 2. weakness of bladder forceps contraction is often seen in type 2 diabetes, poor glycemic control combined with peripheral nerve disorders, and also in cerebral hemorrhage and cerebral infarction, Cerebral infarction leads to dysfunction of the nerves governing the contraction. This is when bladder contraction weakness occurs and the patient is unable to urinate due to bladder contraction weakness during urination, often with cerebral infarction, cerebral hemorrhage or internal environmental disorders, endocrine disorders in internal medicine, diabetes, etc. Further examination is needed to determine the specific cause.