Frequent urination and feeling of constant urge to urinate under the abdomen may be caused by cold, too much water or nervousness, so you should pay attention to keeping warm and keep a relaxed mood. This condition is also common in pregnant women due to the enlargement of the uterus, caused by pressure on the bladder, which is a normal physiological situation. In addition, urethritis, cystitis, prostatitis, bladder tuberculosis, neurogenic bladder, bladder tumor, etc. can also cause this symptom, you should seek medical examination, according to the specific situation, under the guidance of a professional physician medication treatment or even surgery. 1, urethritis: when there is an inflammatory stimulation will appear frequent urination, feel under the abdomen has been urinating, accompanied by vulvar tingling, urethral orifice redness and other symptoms, can use The cephalosporin and levofloxacin anti-inflammatory treatment; 2, cystitis: bacterial stimulation of the bladder mucosa will make the bladder force urinary muscle contraction, causing frequent urination, urinary urgency, painful urination, accompanied by cloudy urine, dark color, odor and other symptoms, the application of norfloxacin or cefuroxime and other treatment can be prescribed; 3, prostatitis: prostate inflammation stimulation of the bladder neck will always have the feeling of urination, accompanied by urinary urgency, fever, perineal swelling and pain The symptoms can be treated with doxycycline, levofloxacin and other anti-inflammatory treatments, and physical therapy such as microwave and laser can also be applied to improve; 4, bladder tuberculosis: tuberculosis bacteria with urine into the ureter and bladder, there will be urinary urgency, urination, hematuria, pus urine, accompanied by nausea, vomiting and other symptoms, the application of isoniazid, streptomycin and other anti-tuberculosis treatment; 5, neurogenic bladder: can be manifested as overactive bladder syndrome It is due to various external factors that lead to weak contraction of the bladder forceps, so that urine can not be discharged, will feel always have the desire to urinate, urinary frequency, urinary incontinence and other symptoms, can apply desmopressin to reduce urine production, or catheterization, acupuncture and other treatment; 6, bladder tumor: when there is a tumor in the bladder compression will stimulate the bladder always have the desire to urinate, accompanied by urinary urgency, hematuria, lower abdominal mass and other symptoms, to surgery as the main treatment The tumor can also be improved with chemotherapy, radiotherapy, bladder perfusion, etc. In addition, prostate enlargement, urinary tract stones and pyelonephritis can also cause frequent urination and a constant urge to urinate in the lower abdomen, so you should consult a doctor to confirm the diagnosis with other symptoms and tests and treat the cause.