Frequent urination is mainly related to urinary system diseases, the causes of the corresponding conditions, including urinary system inflammation, stones, tumors, prostate hyperplasia, kidney function abnormalities, etc., and need to do the examination mainly includes routine urinalysis, blood tests, ultrasound, nuclear magnetic resonance and pathological biopsy and so on. 1. Urine routine: Urine routine examination can determine whether there are white blood cells, red blood cells and urine protein levels rise, whether to find out the corresponding pathogen, and make a preliminary judgment on the physical condition. 2. Blood test: blood test can check the changes of white blood cells and blood sedimentation index to determine whether there is inflammation or not; tumor markers can be checked to determine whether there is a possibility of malignant lesions. 3. Ultrasound: ultrasound can be used to determine whether there are stones, tumors and mucosal edema. 4. Nuclear magnetic resonance (NMR): it can be used for further diagnosis of urological tumor lesions. 5. Pathological biopsy: through the examination found to have tumor lesions, want to further determine the nature of the pathology, need to do a puncture biopsy. If the symptoms of frequent urination are accompanied by obvious hematuria and incomplete urination, it is necessary to consult a doctor in time for examination and standardized treatment under the guidance of clinicians after diagnosis of the disease to avoid delay.