Wanting to urinate but not being able to do so after drinking alcohol may be related to alcohol stimulation, or having prostate diseases such as prostate hyperplasia. 1. Alcohol stimulation: when men drink alcohol, alcohol leads to sharp congestion of the prostate gland, resulting in urinary difficulties, appearing after drinking alcohol want to urinate but can not urinate out of the situation. 2. Prostate disease: If you already have prostate disease, such as prostate hyperplasia, prostatitis, etc., if you drink too much alcohol, it will lead to the prostate gland congestion gradually serious, and it will be difficult to urinate. Therefore, if you suffer from prostate-related diseases, you should try to avoid drinking alcohol, otherwise it may aggravate your original condition.