Drinking a little water to urinate frequently, there may be urinary system-related diseases, it is recommended to go to the hospital for further examination of clear causes: 1, overactive bladder syndrome, this condition is often seen in the unexplained excessive and frequent contraction of the bladder forced urinary muscle, can cause the patient obvious frequency of urination, not accompanied by painful urination, not accompanied by back pain and other symptoms. It is relatively common in young women and requires urodynamic examination for further clarification. 2. Acute infections occurring in the urinary system, such as acute urethritis and acute cystitis, can cause the above symptoms. It is usually accompanied by urinary urgency, painful urination and cloudy urine, which need to be further clarified by urinalysis. 3. The presence of chronic urinary retention or associated occupational lesions of the bladder and urinary tract, such as bladder tumors, bladder stones and stones in the lower ureter, can cause strong bladder contraction and irritation, which can then cause severe urinary frequency. For patients who have chronic urinary retention, which can be accompanied by frequent urination and also poor urination, often seen in men with prostatic hyperplasia resulting in chronic urinary retention, further ultrasound and urine laboratory tests need to be performed at the hospital to clarify.