Thin and weak urine is recommended to always go to a regular hospital for examination, urodynamics and routine urine examination to observe whether there is urinary tract infection, bladder contraction weakness, or increased resistance of the posterior urethra. If there is bladder contraction weakness, it is recommended that oral alpha-blockers can be taken. These drugs can increase bladder contraction and reduce posterior urethral resistance, making urination more fluid. If there is posterior urethral obstruction, the most common in male patients is prostatic hyperplasia, this condition may have residual urine, the posterior urethra becomes slender and distorted, you can take oral Harlequin, 1 tablet orally every night at bedtime, combined with Polyclonal if necessary, through these treatments can improve the symptoms of slender and weak urination.