Men with lower abdominal swelling always want to urinate, may be due to cystitis, prostatitis, prostate hyperplasia, bladder stones and other diseases. 1. Cystitis: Inflammatory infections in the bladder and irritation of the bladder mucosa may lead to lower abdominal swelling, frequent urination, urinary urgency, painful urination, etc. Such people can be treated with drugs such as levofloxacin and ceftazidime. 2. Prostatitis: these people can have frequent urination, urgency, pain in urination and other phenomena, can also have difficulty urinating and other phenomena, and may also have perineal discomfort, lower abdominal swelling, can also be treated by using ceftazidime, levofloxacin, amoxicillin and other drugs. 3. Prostatic hyperplasia: this group of people can have increased nocturia, urination difficulties and other phenomena, urine accumulation can lead to lower abdominal distension, always want to urinate symptoms, can be treated with alpha blockers such as tamsulosin and other medications, and if necessary, need surgical treatment. 4. Bladder stones: when the position changes, the bladder is stimulated by the stones, there may be lower abdominal distension always want to urinate, accompanied by frequent urination, urinary urgency, urinary pain, hematuria and other phenomena, can be minimally invasive surgery for treatment. All the above drugs need to pay attention to the side effects and adverse reactions of drugs, please use the above drugs under the guidance of a doctor. If men have lower abdominal cramps always want to urinate, it is recommended to go to the hospital in time.