The fact that the urine comes out again as soon as you sit down after urinating is considered to be related to excessive drinking, urethritis, prostatitis and other diseases. 1. Drinking too much water: it may be due to drinking too much water, so that the body produces more urine, so that the phenomenon of urinating again after sitting down after urinating. 2. Urethritis: generally due to the urethral mucosa in the inflammation of the stimulus, and after sitting down will make the abdominal pressure gradually increase, so that the stimulus produced by the aggravation, thus causing the phenomenon of urination after a sit down, urethritis may appear urinary pain and other symptoms. 3. Prostatitis: usually due to the prostate in the inflammatory media under the stimulation, so that its enlargement oppression of the urethra, which appeared after the urine after sitting down and the phenomenon of urine, and will appear pain, urinary abnormalities and other symptoms. If the phenomenon of sitting down and urinating after urinating occurs, you should go to the hospital in time, so as to avoid delaying the condition and adverse consequences.