Always wanting to pee but not much and difficult to pee may be caused by bladder stones, cystitis and urethritis and other diseases. 1. Bladder stones: The causes of bladder stones are mostly related to factors such as urine retention, kidney or ureteral stones entering the bladder, etc. Obesity, urinary tract infections, and climatic factors may also trigger the disease. The location of the stone changes, irritation of the urinary tract mucosa, the patient will have difficulty urinating, intermittent interruption of urine and urinary frequency and other symptoms. 2. Cystitis: The causes of cystitis may be related to bacterial infections, drug and chemical sensitivities, etc. Changes in sex hormones and obstruction of urine flow may also lead to the disease. Cystitis is mainly characterized by frequent urination, urinary urgency and burning sensation in the urethra. 3. Urethritis: the formation of urethritis is mostly related to pathogen infection, patients will also appear urethral itching, frequent urination and painful urination. Caused by the old want to pee but not much urine and more difficult reasons, it is recommended that patients go to the regular hospital, relevant examinations, clear causes under the guidance of the doctor treatment.