The discomfort of having to urinate but urinating very little on the lower abdomen may be caused by cystitis, prostatitis, bladder stones and other factors. 1. cystitis: it may be related to factors such as holding back urine for a long time or not paying attention to physiological hygiene, which can lead to inflammation and infection in the bladder, so that the bladder mucous membrane sensibility increases, it will cause frequent urination, incomplete urination, discomfort in the abdomen, and may be accompanied by pain in urination. 2. Prostatitis: Frequent masturbation, holding urine for a long time, drinking alcohol for a long time and other factors may induce prostatitis, so that the prostate gland is locally enlarged, and will cause pressure and stimulation of the urethra, which will cause frequent urination, incomplete urination and abdominal discomfort, accompanied by perineal distension and pain and other symptoms. 3. Bladder stones: can be secondary to the upper urinary tract stones, may also be caused by metabolic abnormalities in the body, due to the stones will be repeated stimulation of the bladder, frequent urination, there will be frequent urination, incomplete urination, accompanied by pain in the abdomen, pain in urination, urination difficulties and other symptoms. There is a desire to urinate but very little urine small abdominal discomfort may also be caused by other reasons, it is recommended that patients go to the hospital urology department.